A Passion For Color
Today’s color chemists and stylists have more choices than ever before when it comes to color and pigments.
When looking for pigments to produce earth-tone colors, no one offers a wider selection than Hoover Color.
With such a large selection, our product line can be overwhelming. This “Color Guide for Industrial Applications”
is therefore designed to help you in choosing the right pigment for your application.
Hoover Color was founded in 1923 with the express purpose of giving their customers the precise color
they needed. This concept of meeting our customers coloring demands is still alive and well today.
By combining advances in processing technology with our historic passion for color, we give you
consistent color, time and time again. If you don’t believe us, ask Binney & Smith, the makers of
Crayola® Crayons. They have entrusted us to produce the colors for their entire line of crayons.
So if you’re searching for that extraordinary Umber, sensational Sienna or outrageous
Ochre, look no further, Hoover Color is here to assist you.
Table Of Contents
Yellow Pigments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Ochres, Raw Siennas, Synthetic Yellow Iron Oxides, Tan Zinc-Ferrite,
Golden-Shade Blended Iron Oxides
Brown Pigments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Raw and Burnt Umbers, Van Dykes, Red & Neutral-Shade Blended Iron Oxides
Red Pigments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
Burnt Siennas, Synthetic Red Iron Oxides, Natural Red Iron Oxides
Black Pigments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-12
Thermal and Synthetic Black Iron Oxides, Iron Manganese Ferrites,
Bone Black, Carbon Black
Specialty Pigments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-14
Chromium Oxide Greens, Tuscan Iron Oxide/Organic Blends
Pigments For Wood Stains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-16
Siennas, Umbers, Van Dykes
Quality, Specifications And Recommended Use Of Pigments . . . . . . 17
Contacting Hoover Color . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1
How To Use This Guide
This guide provides information on over 100 pigments, broken down into 6 color groups and 16 color
families. To help you find what you’re looking for, we displayed the pigment information by color group.
If you’re looking to match a yellow metal finish, you want to look at the yellows that we are offering, not
sort through lists of chemical families. So all of our yellows are grouped together, whether they are a
Natural Raw Sienna or a high-heat Zinc-Ferrite. There are six color groups all together,
310BS Burnt Sienna
Yellow, Brown, Red, Black, Green and Orange.
Each color group section starts with a chart describing general properties, such as
lightfastness, chemical resistance and heat stability for each of the color families in that
group. Typical properties for each individual pigment are displayed in additional tables.
Certain pigments have been selected in order to illustrate the coloring properties of our
Masstone
Tint
materials. These selected pigments are displayed in two color chips. The dark
masstone chip represents the pigment dispersed in a clear long-oil alkyd
+b* (Yellow)
resin system. The light tint chip represents the selected pigment used
in combination with an easy-dispersing Titanium Dioxide (TiO2) also
in a clear, long-oil alkyd resin system. In these chips one part pigment is mixed with three parts TiO2.
Only Hoover Color’s most popular pigments are displayed
with color chips. To provide information about the color and
undertone for all of our pigments, charts are included to reflect
-a*
(Green)
their tint shades. The data is based on color readings taken
from a tint chip with the CIELAB A* and B* values displayed.
Many of the pigments that Hoover Color is best known for
possess unique staining properties. These pigments are illustrated in wood stain applications on pages 15 &16 of this guide. On
page 17, we give you information on product specifications, quality
control and product consistency. If you have other questions concerning Hoover Color’s products, please feel free to contact us by phone, fax
or e-mail. Our sales and technical staff are always happy to help you.
Tint Color Value - CIELAB
2
Ochres / Raw Siennas / Synthetic Yellow Iron Oxides / Tan-Zinc Ferrite / Golden-Shade Blended Iron Oxides
Yellows
Hoover Color offers a wide range of yellow pigments. The Natural Yellow Iron Oxides, Ochres and Raw
Siennas, can be used to produce a range of yellow colors with a brownish undertone. The Raw Siennas are
often used in wood stain applications to produce lighter wood colors, such as Oak & Maple. Their fine crystal
structure makes them semi-transparent and ideal for these applications. If you’re looking for an inexpensive
yellow to create a basic yellow or buff, try our Ochres.
If you need a more brilliant yellow, look at our Synthetic Iron Oxides. These pigments are engineered
to maximize specific color properties, along with ease of dispersibility. Synthetic Iron Oxides are
opaque and offer better hiding than their Natural counterparts. Our Synthetic Yellows range from the
clear lemon-shade of our HY-605M to the redder cast of our HY-630M. In applications where a lower
level of dispersibility can be tolerated, try our HY-650. To broaden the range of yellow colors
available to our customers, Hoover Color blends together various Yellows with other materials to
produce our Golden-Shade Blended Iron Oxides. These pigments meet the same high levels of
opacity and dispersibility as the Synthetic Yellow Iron Oxides, but with an expanded color range.
Both Natural and Synthetic Yellow Iron Oxides have limited heat-stability and will start to change color at
approximately 350°F. In order to meet the yellow and buff colors needed for higher-heat products,
Hoover Color offers our HT-1000.
+b* (Yellow)
Synthetic
Yellow
Iron Oxides
Tan-Zinc
Ferrite
Geothite
Goethite
Goethite
Mixture
FeO-OH
FeO-OH
FeO-OH
FeO-OH
FeO-OH/Fe2O3
CAS#
1343-81-3
1343-81-3
51274-00-1
68187-51-9
52357-70-7
Color Index#
Yellow 43
Yellow 43
Yellow 42
Yellow 119
Brown 6
Lightfastness
Permanent
Permanent
Permanent
Permanent
Permanent
Chemical Resistance
Excellent
Excellent
Excellent
Excellent
Excellent
Heat Stability (°C/°F)
175°/350°
175°/350°
175°/350°
535°/1000°
175°/350°
Pigment
Properties
Ochre
Raw
Sienna
Crystal Structure
Goethite
Chemical Composition
Gold-Shade
Blended
Iron Oxides
3
+a*
(Red)
Tint Color Value - CIELAB
Typical Properties
Iron
Content
(as Fe2O3)
325 Mesh
Residue
(wt.,%)
Mean
Particle
Size (µ)
Specific
Gravity
g/cc
Specific
Gravity
lbs/gallon
Tap
Density
g/cc
Oil
Absorption
lbs/100 lbs
pH
102NO
45%
0.03
1.00
3.0
25.2
0.8
34.1
7.0
110NO
32%
0.10
1.30
3.0
25.2
0.6
43.4
6.1
113NO
26%
0.15
1.30
2.9
23.8
0.6
45.0
6.1
202RS
68%
0.02
1.00
4.6
37.9
0.7
34.1
5.8
204RS
53%
0.03
1.50
3.9
32.1
0.8
37.2
6.1
206RS
57%
0.02
1.50
3.5
28.7
0.8
32.6
6.8
208RS
45%
0.02
1.50
3.2
26.9
0.8
37.2
6.8
210RS
70%
0.03
1.50
3.2
26.9
0.9
27.9
7.0
215RS
83%
0.03
1.50
3.3
27.5
1.0
21.7
6.7
Color
Group
Ochres
102NO Ochre
110NO Ochre
Raw Siennas
202RS Raw Sienna
204RS Raw Sienna
Golden-Shade Blended Iron Oxides
210RS Raw Sienna
708BG Brown
702BG
87%
0.04
1.50
3.3
27.7
0.5
37.2
5.9
704BG
77%
0.02
1.50
3.9
32.1
0.7
45.0
6.8
706BG
87%
0.05
1.50
3.9
32.1
0.7
34.1
6.3
708BG
58%
0.03
1.50
3.1
26.1
0.6
46.5
6.3
710BG
56%
0.05
1.50
3.2
26.9
0.7
35.7
7.7
712BG
66%
0.05
1.50
3.6
29.7
0.6
45.0
5.9
Synthetic Yellow Iron Oxides
HY-610M Yellow
HY-620M Yellow
HY-600M
87%
0.01
0.40*
4.0
33.3
0.4
35.0
7.0
HY-605M
87%
0.01
0.35*
4.0
33.3
0.4
36.0
7.0
HY-610M
87%
0.01
0.35*
4.0
33.3
0.4
36.0
7.0
HY-620M
87%
0.01
0.50*
4.0
33.3
0.5
34.0
7.0
HY-630M
87%
0.02
0.90*
4.0
33.3
0.7
48.0
7.0
HY-650
87%
0.01
0.40*
4.0
33.3
0.2
42.0
4.0
66%
0.01
0.50*
5.2
43.3
1.1
16.0
8.0
Zinc-Ferrite Tan
HT-1000
HT-1000 Tan
*Hoover Color determines Mean Particle Size differently at different production facilities. Results marked with an “*” are tested using laser
diffraction and measure the most basic crystal. Other items are measured using scanning optical microscopy and measure the average
agglomerate size after being dispersed using high-shear.
4
Raw and Burnt Umbers
Browns
Umbers are one of the most versatile Natural Iron Oxides. Hoover Color is the first place to look if you
need Umber, with 22 standard grades. Despite their dark appearance, they are close in crystal structure
to Yellow Iron Oxides. In their “Raw” form, this yellow crystal structure gives Raw Umbers their
pleasant greenish undertone. Often referred to as a neutral toner when used in combination
with other pigments, Raw Umbers can be used to darken a color mix without significantly
altering the chromaticity of the other pigments in the mix. Raw Umber has limited heat stability,
but this allows us to heat-treat the Umber and convert it to a heat-stable red structure.
The resulting “Burnt” Umber has a pleasing warm red undertone, along with improved heat
stability. It is widely used as a basic brown in many applications. It can also be used as the
cornerstone pigment in a base to
produce a wide range of brown shades.
One of the most important markets for
+b* (Yellow)
Umbers is the wood-finish market.
See pages 15 & 16 for displays of
Hoover Color’s pigments in wood
stain applications.
+b* (Yellow)
Pigment
Properties
Raw
Umber
Burnt
Umber
Crystal Structure
Goethite
Hematite
Chemical Composition
FeO-OH
Fe2O3
CAS#
12713-03-0
12713-03-0
Color Index#
Brown 7
Brown 7
Lightfastness
Permanent
Permanent
Chemical Resistance
Excellent
Excellent
Heat Stability (°C/°F)
175°/350°
315°/600°
+a*
(Red)
Tint Color Value - CIELAB
+a*
(Red)
5
Typical Properties
Iron
Content
(as Fe2O3)
325 Mesh
Residue
(wt.,%)
Mean
Particle
Size (µ)
Specific
Gravity
g/cc
Specific
Gravity
lbs/gallon
Tap
Density
g/cc
Oil
Absorption
lbs/100 lbs
pH
402RU
52%
0.02
1.60
3.0
25.2
0.7
49.6
7.7
404RU
44%
0.04
1.60
2.2
18.5
0.7
46.5
7.4
406RU
40%
0.05
1.60
2.8
23.2
0.7
62.0
8.4
408RU
43%
0.05
1.60
2.9
24.5
0.6
49.6
7.0
410RU
40%
0.03
1.60
3.2
26.9
0.7
51.2
8.0
412RU
56%
0.03
1.60
2.9
24.5
0.7
51.2
7.9
414RU
44%
0.02
1.60
3.3
27.7
0.7
55.8
8.2
417RU
55%
0.02
1.60
3.1
26.1
0.7
55.8
8.0
502BU
61%
0.05
1.50
3.0
25.2
0.8
46.5
7.8
503BU
47%
0.05
1.50
3.1
25.8
0.7
49.6
8.0
506BU
64%
0.04
1.50
3.5
29.1
0.8
51.2
7.7
508BU
53%
0.06
1.50
3.6
29.7
0.7
62.0
7.9
510BU
57%
0.01
1.50
3.6
29.7
0.7
52.7
8.1
511BU
46%
0.02
1.50
2.5
20.8
0.6
65.1
8.4
512BU
59%
0.05
1.50
3.5
28.7
0.7
58.9
8.2
513BU
63%
0.10
1.50
2.9
24.2
0.7
62.0
7.5
514BU
54%
0.05
1.50
3.7
30.8
0.7
61.3
8.2
516BU
62%
0.05
1.50
3.9
32.1
0.7
58.9
8.0
518BU
51%
0.08
1.50
3.2
26.8
0.7
66.7
8.1
520BU
64%
0.05
1.50
2.9
23.8
0.7
46.5
7.9
522BU
58%
0.05
1.50
2.9
23.8
0.7
46.5
8.3
524BU
50%
0.03
1.50
2.9
23.8
0.7
62.0
8.2
Color
Group
Raw Umbers
402RU Raw Umber
412RU Raw Umber
414RU Raw Umber
Burnt Umbers
502BU Burnt Umber
512BU Burnt Umber
510BU Burnt Umber
524BU Burnt Umber
*Hoover Color determines Mean Particle Size differently at different production facilities. Results marked with an “*” are tested using laser
diffraction and measure the most basic crystal. Other items are measured using scanning optical microscopy and measure the average
agglomerate size after being dispersed using high-shear.
6
Browns
Van Dykes / Red-Shade / Neutral-Shade Blended Iron Oxides
The human eye is very sensitive to subtle variation in the brown color spectrum, which is why Hoover Color
offers such a wide range of products in this color range. We like to think of ourselves as Brown Central. From
Natural Browns, like Umbers (pages 5&6) and Van Dyke Browns, to specific blends that produce that exact
shade you need, Hoover Color is there with products that give you the color you want.
We organize our Brown Blends into three groups, Van Dyke Browns, Blended Iron Oxides that have a reddish undertone, and Blended Iron Oxides with more of a neutral undertone. We also blend Iron Oxides into
brownish yellows (pages 3&4 “BG” series). The reddish undertones of the “BR” series can be used to produce
a whole series of warm browns. The neutral undertone “BN” series, in contrast, can be used to produce a
cooler range of color since they lack either a strong red or yellow undertone.
Hoover Color also offers a very unique range of Van Dyke Brown pigments. Of course we have the traditional Lignite from Germany. But because of the processing difficulties with the traditional Van Dyke, we have
two alternative materials to help you reach this color space. The first is our 925 Brown. This material is a
water-soluble extract made from the traditional Van Dyke material. It is ideal for water-based systems. For
those of you who are working in water-based systems, you can achieve the Van Dyke shade and undertone
without the grinding problems of a pigment. The other alternative that we have for you is our 778BN. Unlike
traditional Van Dyke,778BN is easy dispersing and
also exhibits higher tinting strength.
Its growing popularity has
+b* (Yellow)
exceeded even our expectations.
It’s good stuff. See these
pigments used in stain
applications on pages 15&16.
Pigment
Properties
Van Dyke
Brown
Red-Shade Blended
Iron Oxides
Neutral-Shade Blended
Iron Oxides
Crystal Structure
Lignite
Mixture
Mixture
Chemical Composition
C
Fe2O3/FeO-OH/Fe3O4
Fe2O3/FeO-OH/Fe3O4
CAS#
72669-22-8
52357-70-7
52357-70-7
Color Index#
Brown 9
Brown 6
Brown 6
Lightfastness
Limited
Permanent
Permanent
Chemical Resistance
Excellent
Excellent
Excellent
Heat Stability (°C/°F)
100°/212°
175°/350°
150°/300°
+a*
(Red)
Tint Color Value - CIELAB
7
Typical Properties
Color
Group
Iron
Content
(as Fe2O3)
325 Mesh
Residue
(wt.,%)
Mean
Particle
Size (µ)
Specific
Gravity
g/cc
Specific
Gravity
lbs/gallon
Tap
Density
g/cc
Oil
Absorption
lbs/100 lbs
pH
Red-Shade Blended Iron Oxides
740BR
Red-Shade Brown
746BR
Red-Shade Brown
732BR
73%
0.03
1.30
4.2
34.7
0.6
60.5
7.0
734BR
84%
0.05
1.30
4.4
36.2
0.7
34.1
6.5
736BR
67%
0.02
1.30
3.2
26.9
0.8
41.9
7.5
738BR
81%
0.03
1.30
4.3
36.2
1.0
28.0
6.5
740BR
51%
0.01
1.30
3.6
29.7
0.7
40.3
7.8
742BR
58%
0.01
1.30
3.6
29.7
0.7
40.3
6.6
744BR
55%
0.03
1.30
3.2
26.9
0.7
38.8
7.5
746BR
67%
0.02
1.30
2.9
23.8
0.6
43.4
7.3
748BR
81%
0.02
1.30
4.4
36.2
1.0
32.6
7.7
58%
0.02
1.30
3.3
27.7
0.8
29.4
8.1
752BR
88%
0.03
1.30
4.2
34.7
0.9
32.6
7.7
754BR
89%
0.01
1.30
4.2
34.7
1.0
33.3
7.8
750BR
Neutral-Shade Blended Iron Oxides
754BR
Red-Shade Brown
772BN
89%
0.06
1.60
3.6
29.7
1.0
33.3
7.8
774BN
53%
0.15
1.60
3.0
25.2
0.6
58.9
8.0
776BN
93%
0.02
1.60
4.2
34.7
0.8
32.6
7.7
Van Dyke Browns
772BN
Neutral-Shade Brown
Van Dyke
NA
1.0
3.4
1.6
13.3
0.5
54.0
5.0
925Brown
NA
0.00**
0.00**
0.6
5.0
0.5
NA**
9.5
778BN
15%
0.01
2.20
1.9
16.0
0.6
52.4
7.7
*Hoover Color determines Mean Particle Size differently at different production facilities. Results marked with an “*” are tested using laser
diffraction and measure the most basic crystal. Other items are measured using scanning optical microscopy and measure the average
agglomerate size after being dispersed using high-shear.
**925 Brown is a water soluble extract from Van Dyke Brown and therefore cannot be tested as a conventional pigment.
8
Burnt Siennas / Synthetic Red Iron Oxides / Natural Red Iron Oxides
Reds
If you’re looking for earth-tone reds, you’ve come to the right place. We’ve got them all, Burnt Siennas,
Natural and Synthetic Red Iron Oxides. If any group of pigments is uniquely Hoover Color’s, it is
our Burnt Sienna. These pigments are ideal for staining cherry, mahogany or rosewood, plus they are the
pigment of choice when matching Caucasian skin-tones.
Whether you’re looking at Red Iron Oxides for coloring properties or for their anti-corrosion properties,
Hoover Color once again offers a range of products representing all the subtle variations found in this
pigment family. From the warm salmon undertone of HR-1200, to the maroon-wine color of our HR-1209,
we have the products that will meet your needs. Our Natural Red Iron Oxides are used extensively in
barrier anti-corrosion coatings. The six grades that we offer differ in iron content, dispersibility, color and
crystal structure. Our PT-NR has generated a lot of excitement because of its plate-like “micaceous” structure.
+b* (Yellow)
Pigment
Properties
Burnt
Sienna
Synthetic
Red
Iron Oxides
Natural
Red
Iron Oxides
Crystal Structure
Hematite
Hematite
Hematite
Chemical Composition
Fe2O3
Fe2O3
Fe2O3
CAS#
1317-60-8
1332-37-2
1317-60-8
Color Index#
Red 102
Red 101
Red 102
Lightfastness
Permanent
Permanent
Permanent
Chemical Resistance
Excellent
Excellent
Excellent
Heat Stability (°C/°F)
315°/600°
535°/1000°
535°/1000°
+a*
(Red)
Tint Color Value - CIELAB
9
Typical Properties
Color
Group
Iron
Content
(as Fe2O3)
325 Mesh
Residue
(wt.,%)
Mean
Particle
Size (µ)
Specific
Gravity
g/cc
Specific
Gravity
lbs/gallon
Tap
Density
g/cc
Oil
Absorption
lbs/100 lbs
pH
0.05
0.02
0.05
0.02
0.02
0.02
0.04
0.03
0.03
1.60
1.60
1.60
1.60
1.60
1.60
1.60
1.60
1.60
3.2
3.0
3.3
3.1
3.1
3.1
2.9
3.1
2.9
26.7
25.2
27.7
26.2
26.1
26.1
23.7
26.0
23.8
0.9
0.9
0.8
0.8
0.9
0.8
0.8
0.8
0.7
34.1
34.1
31.0
46.5
34.1
37.2
49.6
40.3
46.5
7.5
6.8
6.8
6.8
6.5
6.4
7.0
6.4
6.0
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.06
0.14
0.09
0.09
0.04
0.25*
0.25*
0.30*
0.40*
0.65*
0.65*
1.30*
2.50*
0.25*
0.20*
0.30*
0.40*
0.70*
1.30*
5.2
5.2
4.9
4.9
4.9
4.9
5.2
5.2
4.9
5.1
5.1
5.1
5.1
5.1
43.3
43.3
40.8
40.8
40.0
40.8
43.3
43.3
40.8
42.5
42.5
42.5
42.5
42.5
0.9
0.9
0.9
1.0
1.0
1.1
1.3
1.3
0.9
1.1
1.1
1.1
1.1
1.1
20.0
20.0
16.0
15.0
15.0
18.0
14.0
14.0
20.0
28.0
25.0
28.0
25.0
25.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
4.0
4.0
4.0
4.0
4.0
1.00
0.10
0.50
0.01
0.01
0.03
1.40
1.40
1.40
1.40
1.40
1.80
4.5
4.4
4.5
4.3
4.5
5.0
37.5
36.7
37.5
35.8
37.5
41.7
1.5
1.4
1.4
1.4
1.4
1.5
15.0
22.0
15.0
20.0
15.0
15.0
7.5
6.5
7.5
7.0
8.0
7.0
Burnt Siennas
308BS Burnt Sienna
310BS Burnt Sienna
312BS Burnt Sienna
320BS Burnt Sienna
HR-1201
Synthetic Red Iron Oxide
HR-1203
Synthetic Red Iron Oxide
HR-1208
Synthetic Red Iron Oxide
P3-NR
Natural Red Iron Oxide
P400-NR
Natural Red Iron Oxide
PT-NR
Natural Red Iron Oxide
302BS
56%
304BS
55%
306BS
55%
308BS
50%
310BS
52%
312BS
55%
314BS
60%
316BS
55%
320BS
81%
Synthetic Red Iron Oxides
HR-1200
99+%
HR-1201
99+%
HR-1202
97+%
HR-1203
97+%
HR-1204
97+%
HR-1205
97+%
HR-1208
99%
HR-1209
99%
HR-1211
97+%
HR-1300
95+%
HR-1302
95+%
HR-1303
95+%
HR-1306
95+%
HR-1308
95+%
Natural Red Iron Oxides
P10-NR
95%
P250-NR
95%
P3-NR
80%
P400-NR
82%
P7-NR
81%
PT-NR
98%
*Hoover Color determines Mean Particle Size differently at different production facilities. Results marked with an “*” are tested using laser
diffraction and measure the most basic crystal. Other items are measured using scanning optical microscopy and measure the average
agglomerate size after being dispersed using high-shear.
10
Blacks
Thermal and Synthetic Black Iron Oxides /
Iron-Manganese Ferrite Blacks / Bone Blacks / Carbon Blacks
Black pigments come in a wide range of compositions, each possessing unique characteristics which
tend to make certain blacks better for a specific usage. If you want high tinting strength, chose a carbon
black. For jettness, use a Bone Black. For High heat applications, an Iron-Manganese Ferrite is your best
candidate, and for overall performance, a Black Iron Oxide. Hoover Color offers two types of Black Iron
Oxides, the traditional synthetically precipitated grades and a newly developed thermal
process grade. Thermally produced black iron oxides lack the soluble salts associated
with synthetically precipitated grades and result in better compatibility across systems
of differing chemistry.
-a*
(Green)
Pigment
Properties
Thermal
Black
Iron Oxides
Synthetic
Black
Iron Oxides
Iron
Manganese
Ferrites
Bone
Blacks
Crystal Structure
Magnetite
Magnetite
Mixed Phase
Iron Oxide
Tri-Calcium
Phosphate
Chemical Composition
Fe3O4
Fe3O4
CAS#
12227-89-3
12227-89-3
68186-94-7
1306-06-5
1333-86-4
Color Index#
Black 11
Black 11
Black 26
Black 9
Black 7
Lightfastness
Permanent
Permanent
Permanent
Permanent
Permanent
Chemical Resistance
Excellent
Excellent
Excellent
Excellent
Excellent
Heat Stability (°C/°F)
150°/300°
150°/300°
535°/1000°
535°/1000°
315°/600°
(Fe,Mn)(Fe,Mn)2O4 Ca3OH(PO4)2
Carbon
Blacks
Carbon
C
11
-b* (Blue)
Tint Color Value - CIELAB
Typical Properties
Iron
Content
(as Fe2O3)
325 Mesh
Residue
(wt.,%)
Mean
Particle
Size (µ)
Specific
Gravity
g/cc
Specific
Gravity
lbs/gallon
Tap
Density
g/cc
Oil
Absorption
lbs/100 lbs
pH
#6 Bone
Black
NA
1.0
9.00
2.6
21.7
1.8
42.0
8.0
BC-35
Carbon
NA
0.002
0.04*
1.6
13.9
0.3
100.0
7.3
HB-1033T
60%
0.01
0.60*
4.8
40.0
1.3
15.0
8.0
HB-1030
99%
0.01
2.13
5.1
42.5
1.3
19.5
7.0
HB-1034
97%
0.70
1.16
5.1
42.5
1.0
27.9
8.0
HB-1090
99%
.005
1.80
5.0
41.7
1.1
20.2
7.0
HB-1094
98%
.01
0.30*
5.0
41.7
1.0
22.0
8.0
Color
Group
#6 Bone
Bone Black
Blacks
Iron Oxides
BC-35
Carbon Black
*Hoover Color determines Mean Particle Size differently at different production facilities. Results marked with an “*” are tested using laser
diffraction and measure the most basic crystal. Other items are measured using scanning optical microscopy and measure the average
agglomerate size after being dispersed using high-shear.
HB-1033T
Black Iron Oxide
HB-1094
Black Iron Oxide
12
Specialties
Chromium Oxide Greens / Tuscan Iron Oxides / Organic Blends
Chromium Oxide Greens are well known
for their outstanding durability. They are
lightfast, chemically resistant, and are able
to withstand high temperatures. Best
known as the pigment used in tennis court
coatings, Chromium Oxide Greens are used
in practically every application.
Tuscan Blends are designed for specific
uses where the customer is seeking a vivid
color on an economic basis. These pigments combine the brightness of organic
pigments with the durability of iron oxides.
Tuscan Blends have a long history of use
in the maintenance coating area. While not
lightfast, coatings made with these pigments
show less color change than ones made
with straight organic pigments. So a Tuscan
Orange will fade over time, but from a bright
orange to a dull orange. Most organic
orange pigments would fade completely
in exterior applications.
Pigment
Properties
Chromium Green
Oxide
Crystal Structure
Chemical Composition
Cr2O3
Tuscan
Orange
Tuscan
Red
Mixture
Mixture
FeO-OH/Fe2O3/C6H5N3O4
Fe2O3/C6H5N3O4/C7H8CINO3S
1332-37-2/51274-00-1/97-02-9-
1332-37-2/51274-00-1/97-02-
CAS#
1308-38-9
02-9
9/85-51-7
Color Index#
Green 17
Mixture
Mixture
Lightfastness
Permanent
Good
Good
Chemical Resistance
Excellent
Good
Good
Heat Stability (°C/°F)
760°/1400°
175°/350°
175°/350°
13
Typical Properties
Color
Group
Iron
Content
(as Fe2O3)
325 Mesh
Residue
Mean
Particle
Size (µ)
Specific
Gravity
g/cc
Specific
Gravity
lbs/gallon
Tap
Density
g/cc
Oil
Absorption
lbs/100 lbs
pH
Chromium Oxide Greens
HG-5060
Chromium Oxide
Hg-5040
NA***
0.04
0.60*
5.1
42.5
1.1
23.0
8.5
HG-5060
NA***
0.04
0.80*
5.1
42.5
1.4
22.0
8.0
Tuscan Iron Oxide/Organic Blends
TUSC-10395
Tuscan Orange
Tusc-10395
11.5%
0.20
1.75
2.8
23.3
0.5
34.1
7.0
Tusc-10828
4.5%
0.30
1.32
2.6
21.7
0.6
40.3
7.0
Tusc-11011
5.0%
0.02
2.10
4.4
26.7
1.7
12.4
7.0
*Hoover Color determines Mean Particle Size differently at different production facilities. Results marked with an “*” are tested using laser
diffraction and measure the most basic crystal. Other items are measured using scanning optical microscopy and measure the average
agglomerate size after being dispersed using high-shear.
***All of Hoover Color’s Chromium Oxide Green is >99% pure Cr2O3
TUSC-10828
Tuscan Red
TUSC-11011
Tuscan Red
14
Stains
Siennas / Umbers / Van Dykes
Some of the finest furniture manufactured today is stained with pigments from Hoover Color.
Siennas, Umbers and Van Dykes all have a semi-transparent quality, which can be used to stain
wood without hiding the grain of the wood. In this section, we display some of these pigments
in stain applications. These displays were prepared using birch panels. So whether you’re trying to create a golden-oak color or trying to bring out the rich red tones in a piece of mahogany,
Hoover Color’s pigments give you the color you need. The nine pigments illustrated give just a
hint of the broad range of staining pigments available at Hoover Color.
15
Siennas
202RS Raw Sienna
310BS Burnt Sienna
320BS Burnt Sienna
508BU Burnt Umber
417RU Raw Umber
503BU Burnt Umber
Van Dyke 925 Brown
Van Dyke Brown M
Van Dyke 778BN Brown
Umbers
Van Dykes
16
Quality,
Specifications,
Recommended
Uses of
Pigments
Product quality and consistency are just two reasons why Hoover Color has been successful for
80 years. Hoover Color combines statistical techniques and customer feedback to produce and market the
pigments that you need, regardless of what your end-use application is. All of this work is performed with
one goal in mind: To ensure the satisfaction of you, our customer.
From its own mining site in Virginia, to globally sourced ores and pigments from around the world, Hoover
Color is at work from start to finish ensuring product quality and consistency. These products are controlled for
color, tinting strength, and particle size, as well as other chemical and physical properties. Hoover Color’s specifications for pigments are based on years of testing and working with customers to fully assess their needs.
Hoover Color’s primary equipment for testing the color
of coatings grade pigments is the Hoover Automatic Muller.
This machine disperses a small pigment/resin sample, which
is subsequently dried and measured for color and strength
using a spectrophotometer (ref. ASTM
D386, ISO 787-16). Coating Grade
pigments are controlled in both a masstone application (pigment
in clear resin) and tint (pigment plus Titanium Dioxide in clear resin).
Using the CIELAB color scale, these pigments are controlled to a
delta E specification of less than 1.00 to 1.50, depending on grade.
Please consult the product data sheet of a given pigment for
exact specifications and typical properties.
As mentioned throughout this brochure, Hoover Color’s pigments find use in wood stains, coatings, plastics, inks, paper,
mulch, and concrete products, to name a few. This variety of use
illustrates how important it is to work with each customer to select
the pigments that will meet his or her needs.
For customers using high-speed dispersion equipment, Hoover Color offers a full line of micronized synthetic and natural pigments. These products give Hegman readings of 6+. For less demanding applications, and/or customers using intensive grinding
equipment, Hoover Color has many non-micronized natural and synthetic pigments. All of these pigments provide a full range of
colors, as well as a broad range of performance characteristics.
So whether you’re working in an industrial lab, or working “around the house”, chances are, one of Hoover Color’s pigments is
in use close-by. Contact Hoover Color today and tell us what color we can provide for you.
The facts and recommendations made in this publication are based on our own research and the research of others, and are believed to be accurate. However, no
guarantee of accuracy is made, the product discussed being sold without WARRANTY OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE
OF USE. Statements concerning the possible use of our product is not intended as recommendations to use our product in the infringement of any patent.
17
Contacting
Hoover
Color
2170 Julia Simpkins Road
P. O. Box 218
Hiwassee, Virginia 24347 U.S.A.
Phone: 540/980-7233
Fax: 540/980-8781
General Email: hoover@hoovercolor.com
Additional information on
Hoover Color and our products
can be found on our website:
www.hoovercolor.com
18

PO Box 218, Hiwassee, Virginia 24347  T(540)980-7233

F(540)980-8781  www.hoovercolor.com  E-mail: hoover@hoovercolor.com