Corrosion Inhibitor
Selection Guide
INDUSTRIAL LUBRICANTS
Metal working fluids
Clariant is one of the leading suppliers of high-performance additives and components
for metal working fluids, offering a comprehensive range of specialties. As a key supplier
to metal working formulators, we understand our customers’ problems and needs. Clariant
knows that the only guarantee of long-term success is to deliver products that provide
the required benefits to your formulation.
Our corrosion inhibitor portfolio comprises water-soluble and water-dispersible products
for formulating synthetic, semi-synthetic and milky emulsions. Effective corrosion inhibitors
that protect steel and/or aluminium while reducing copper and cobalt leaching and at
the same time deliver additional functionalities such as lubrication and EP/AW properties,
help metal working fluid formulators to address today’s formulation challenges. Excellent
anticorrosion results can be achieved with Clariant products, even under difficult conditions.
Clariant’s corrosion inhibitors have been evaluated according to the following performance
screening test:
Performance criteria
Description of test procedure
Electrolyte & Hard Water Stability
Step 1: Titration in water, add TEA to the acid to adjust to pH 8.5 and assure buffering
Step 2: dissolve TEA-salts in 20° dH water
Step 3: check formation of lime soaps
Steel Corrosion Protection
Step 4: determine corrosion protection properties for ferrous metals (chip filter test)
Aluminium Corrosion Inhibition
Step 5: store 4 aluminium strips half immersed in inhibitor solution at 40°C / 24 h and monitor
corrosion and staining for liquid phase
Step 6: in case strips are blank, lower concentrations are used until corrosion or staining occurs
Step 7: raise pH to 9 by adding aqueous KOH
Protective Layer
Step 8: store aluminium strip (6082) fully immersed in inhibitor solution at 40°C / 24 h
Step 9: take strips out, rinse with water & acetone and store again half immersed in 20° dH hard
water at 40°C / 24 h
Step 10: evaluate corrosion & staining in liquid and atmospheric phase according to rating scheme
Copper and Cobalt Leaching
Step 11: insert 1g copper/cobalt powder in 100 mL demineralized water emulsion and keeping
for 14 days at room temperature (shaking once a day). Determine metal concentration via AAS
(atomic absorption spectroscopy).
Foam Behaviour
Step 12: SITA foam test in 20 °dH water at 40 °C
Lubrication
Step 13: monitoring of lubricant properties for alloy 6082: Reichert friction & wear tester and
Tapping torque tester
Magic Drop*
Step 14: 1-5 % of the product is added to the test concentrate and – if necessary - coupling agent
(TOFA) to render the concentrate clear again
Step 15: a 5 % emulsion in 20 °dH water is made (pH: 9.3 - 9.5) and checked for aluminium
corrosion protection (24 H/40°C) and emulsion quality
* Addition of corrosion inhibitor to an existing steel metal working fluid to upgrade formulation to aluminum protection
Clariant corrosion inhibitor selection guide
General information
Corrosion
inhibitor (CI)
Product group
Application
Appearance
CI type
Water-
soluble CI
Physiochemical properties
Formulation type
Water-
MWF
dispersible CI milky-type
MWF semi- MWF
synthetic
synthetic
Acid
Value [mg KOH/g]
pH (1%)
Pour
point
Formulation properties (neutralized with TEA)
Hard water
stability
Corrosion
Inhibition
Steel
Corrosion
Inhibition
Aluminium
Formation of a protective
layer
Magic drop
Reduced
Copper
leaching
Reduced
Cobalt
leaching
Low
foaming
●●
Hordaphos® 145
Phosphoric acid ester
Yellow to brownish
liquid
●
●
●
160
3
15°C
3
●●
●
3
●●
●●
●●
Hordaphos® 774
Phosphoric acid ester
Pale yellow viscous
liquid
●
●
●
210
2-3
15°C
3
●●
●●
(3)
●
●
●●
Hordaphos® MDIT
Phosphoric acid ester
Clear, colourless to
yellowish liquid
●
●
●
230
2.5
-50°C
3
●●
●●●
3
●●●
●●
●●●
Hostaphat® 1322
Phosphoric acid ester
Pale yellow viscous
liquid
●
●
●
200
3.5
<10°C
3
●●
●
3
●
●●
Hordaphos® 1306
Phosphoric acid ester
Clear, yellowish liquid
●
●
●
120
2-3
-10°C
3
●
●
3
Hordaphos® MDAH
Phosphoric acid ester
Clear, yellowish liquid
●
●
●
290-330
2.3
-50°C
3
●●●
●●
(3)
Hordaphos® MDB
Phosphoric acid ester
Clear, yellowish liquid
470
1.9-2.2
<-50°C
3
●●●
Hostacor® AL
Polymerized fatty acid
Clear brown liquid
●
●
●
63
6-8
0°C
3
●●●
●●●
3
Hostagliss® L4
Complex ester
Clear viscous liquid
●
●
●
●
50.5-55.5
n.a.
-40°C
3
●●
●●
(3)
Hostacor® 3928
Alkenyl succinic acid
derivative
Dark brown, clear
viscous liquid
●
●
●
●
20-30
8.2-9.2
0°C
3
●●●
●
Hostacor® 4323
Alkenyl succinic acid
derivative
Clear liquid
●
●
●
●
166-175
3-4
-10°C
3
●●
Emulsogen® 3971 N
Alkenyl succinic acid
derivative
Clear liquid
●
●
●
●
n.a.
9
<0°C
3
●●●
●
Emulsogen® COL 020
Ether carboxylate
Clear, yellowish liquid
●
●
●
●
65-95
3
18°C
3
●
●
Emulsogen® COL 050
Ether carboxylate
Clear, yellowish liquid
●
●
●
●
75-85
3
6°C
3
Hostacor® IS
Acyl amido carboxylic
acid
Yellowish,
solid/powder
●
●
185-205
n.a.
50°C m.p.
Hostacor® IT
Acyl amido carboxylic
acid, alkanolamine salt
Clear, yellowish liquid
●
●
66-74
8-9
Hostacor® 2732
Preparation of a acyl
amido carboxylic acid
Clear, yellowish liquid
●
●
160-180
Hicor® EKC 100
(Benzothiazol-2-ylthio)
acetic acid
White to yellowish,
solid
●
●
230-260
●
●
●
Additional benefits
WGK
classification
Hazard classification
Signal word
Hazard
statement
EP/AW-additive
1
Danger
H315, H318
3
EP/AW-additive
2
Hazardous (ASCC),
Danger
R38, R41, H315,
H318
3
EP/AW-additive
1
Danger
H315, H318, H412
●●
3
EP/AW-additive
1
Danger
●●
●●
3
EP/AW-additive
1
●●
●●●
3
EP/AW-additive
●●●
3
●●
●●●
●●●
●●●
●●●
●●●
(3)
●●●
●●●
Registration in chemical inventories
REACH (Europe)
DSL
(Canada)
AICS (Australia)
ENCS (Japan)
3
3
3
3
3
3
3
3
3
3
3
H315, H318
3
3
3
3
Danger
H315, H318, H411
3
3
3
1
Danger
H314
3
3
EP/AW-additive
1
Danger
H314
3
3
3
Lubricity
improver
1
Warning
3
Lubricity
improver
1
Label free
Formulated
component
1
Danger
1
Formulated
component
●●●
H315, H318
3
TSCA
(USA)
3
IECSC
(China)
3
NECI (Taiwan)
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
H318, H412
3
3
3
Danger
H318, H412
3
1
Danger
R38, R41, R52/53,
H315, H318, H412
3
3
3
3
Low volume
exempt
3
3
3
●●●
●●●
●●
●●
●●
Emulsion
stabilizer
1
Danger
H315, H318
3
3
3
●
●●
●●●
●●
Emulsion
stabilizer
1
Danger
H315, H318
3
3
3
3
3
●●●
●●
●●●
●●●
1
Label free
3
3
3
3
3
3
<-20°C
3
●●●
●●
●●●
●●●
Formulated
component
1
Label free
3
3
3
3
3
3
5-6
-24°C
3
●●●
●
●●●
●●
Liquified version
of Hostacor® IS
1
Danger
R41, R62, H318,
H361f
3
3
3
3
3
3
n.a.
157°C m.p.
3
●●●
●
●●●
●●
2
Warning
H302, H319, H411
3
3
3
3
Legend:
m.p. melting point
n.a.
not applicable
3
yes (fulfills criteria)
●●● excellent performance
●●
good performance
●
fair, satifying performance
●●● very low Cu/Co leaching
●●
medium Cu/Co leaching
●
acceptable Cu/Co leaching
●●● low foaming
●●
medium foaming
KECI (Korea)
3
●●
(3)
Lubrication
3
●●●
●
Human and environmental safety
3
Legend:
H302: Harmful if swallowed
H315: Causes skin irritation
H318: Causes serious eye damage
H319: Causes serious eye irritation
H361f: Suspected of damaging the unborn child
H411: Toxic to aquatic life with long lasting effects
H412: Harmful to aquatic life with long lasting effects
R38: Irritating to skin
R41: Risk of serious damage to eyes
R52/53: Harmful to aquatic organisms; may cause long-term adverse effects in the aquatic environment
R62: Possible risk of impaired fertility
Please ask your local Clariant representative for the latest Material Safety Data Sheet (MSDS).
3
3
3
3
3
3
3
3
3
3
3
Regional availability
Corrosion inhibitor (CI)
APAC
EMEA
Hordaphos® 145
3
Hordaphos® MDIT
3
Hostaphat® 1322
3
Hordaphos® 1306
Hordaphos® MDAH
3
Hostagliss® L4
3
Hostacor® 3928
APAC
EMEA
3
3
LATAM
NORAM
3
3
Emulsogen® 3971 N
3
3
3
Emulsogen® COL 020
3
3
3
3
Emulsogen® COL 050
3
3
3
Hostacor® IS
3
3
3
Hostacor® IT
3
3
3
3
Hostacor® 2732
3
3
3
3
3
3
Corrosion inhibitor (CI)
Hostacor® 4323
3
3
NORAM
3
3
Hordaphos® MDB
Hostacor® AL
LATAM
3
Hordaphos® 774
Regional availability
3
3
Hicor® EKC 100
3
3
3
3
To discover our full range of products, please consult your local Clariant
representative, contact us by e-mail at industriallubricants@clariant.com
or visit our website www.industriallubricants.clariant.com
headquarters
Clariant International Ltd
Industrial & Consumer Specialties
Market Segment Industrial Lubricants
Rothausstrasse 61
4132 Muttenz
Switzerland
Phone: +41 61 469 73 63
Application Development Department
Clariant Produkte (Deutschland) GmbH
Industrial & Consumer Specialties
Application Development Industrial Lubricants
65926 Frankfurt
Germany
Phone: +49 69 305 282 07
www.industriallubricants.clariant.com
www.clariant.com
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as to the information’s accuracy, adequacy, sufficiency or freedom from defect and assumes no liability
in connection with any use of this information. Any user of this product is responsible for determining
the suitability of Clariant’s products for its particular application. * Nothing included in this information
waives any of Clariant’s General Terms and Conditions of Sale, which control unless it agrees otherwise
in writing. Any existing intellectual/industrial property rights must be observed. Due to possible changes
in our products and applicable national and international regulations and laws, the status of our products
could change. Material Safety Data Sheets providing safety precautions, that should be observed when
handling or storing Clariant products, are available upon request and are provided in compliance with
applicable law. You should obtain and review the applicable Material Safety Data Sheet information before
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