Cylinder propane factsheet
We offer a wide range of
sizes to suit any application
Cylinder characteristics:
colour red (537 BS 381C)
Cylinder Outlet connection
size
A
B
D
E
F
Average physical properties
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
" BSP female left hand?
Cone ressesed
1¼" ACME right hand male
" BSP left hand female
Nominal
contents
kg
4.7
11.0
23.2
46.5
15.3
Approx. dimensions
mm
270 x 387
320x 540
320 x 910
375 x 1250
317 x 706
Chemical symbol (pure)
Specific gravity of liquid (15°C)
Kilogrammes wt. per cu: metre of liquid
Cubic metres of liquid per tone
Specific gravity of gas compared with air (at 15°C–1.0132 bar)
Ratio of gas volume to liquid volume (at 15°C–1.0132 bar)
Cubic metres of gas per cu. metre of liquid
Cubic metres of gas per kilogramme
Cubic metres of gas per tonne
Approx. calorific value:
Gross
KJ/m3 of gas
93,000
KJ/kg
50,000
Net
KJ/m3 of gas
86,000
KJ/kg
46,500
Approx. gross CV Mj/tonne
Boiling point (approx.)
Vapour pressure by temperature (maximum for current spec.)
–15°C
0°C
5°C
30°C
40°C
2.6 bar
5.2 bar
8.5 bar
13.0 bar
16.5 bar
Latent heat or vaporization at I5°C KJ/kg
Specific heat of liquid: KJ/kgK
Sulfur content
Cubic metres of air to burn Im3 of propane
Cubic metres of oxygen to burn one cubic metre of propane
Flammability range gas/air%
Lower limit
Upper limit
Theoretical flame temperature with air
Theoretical flame temperature with oxygen
in
10½ x 15¼
12½ x 21½
12½ x 36
15 x 49
12½ x 28
Approx. weight
empty
kg
11
21
33
61
30
C3H8
0.5–0.52
500–520
1.9–2.0
1.40–1.60
approx. 275:1
268–293
0.53–0.55
530–550
Mj/m3 of liquid
Mj/m3 of liquid
50,000
–40°C
25,000
23,500
340–360
2.5
less than 0.02% wt.
24 (stoichiometric)
5 (stoichiometric)
2.0%
10.0%
1900°C
2805°C
Commercial propane may contain variable amounts of other closely related hydrocarbons, hence the need
to give ranges. Note: All liquid volumes referred to 15°C at the prevailing pressure, all gas volumes refferd at
1.0132 bar. (1 bar+14.5 PSI)
2 of 2
Cylinder propane
Propane table
Approximate vaporisation rates for 46.5 kg propane cylinders
kg propane in cylinder Maximum continuous draw in KJ (and in kg/hr) at various temperatures
18°C
–7°C
4°C
16°C
21°C
45
119,220
176,200
225,780
292,250
316,520
(2.5)
(3.6)
(4.6)
(6.0)
(6.5)
41
109,730
160,370
211,010
260,600
292,250
(2.3)
(3.3)
(4.3)
(5.4)
(6.0)
36
99,180
144,540
189,910
225,780
248,990
(2.1)
(3.0)
(3.9)
(4.6)
(5.1)
32
87,570
128,720
168,801
209,960
225,780
(1.8)
(2.6)
(3.5)
(4.3)
(4.6)
27
79,130
115,000
147,710
185,690
202,570
(1.6)
(2.4)
(3.0)
(3.8)
(4.1)
23
67,520
99,180
131,880
162,480
176,200
(1.4)
(2.0)
(2.7)
(3.3)
(3.6)
18
58,030
83,350
110,780
138,210
148,760
(1.2)
(1.7)
(2.3)
(2.8)
(3.0)
14
47,480
69,630
89,680
112,890
124,500
(1.0)
(1.4)
(1.9)
(2.3)
(2.5)
9
37,980
53,810
71,740
87,570
97,070
(0.8)
(1.1)
(1.5)
(1.8)
(2.0)
5
29,540
40,090
51,700
63,300
69,630
(0.6)
(0.8)
(1.1)
(1.3)
(1.4)
For continuous draws under the worst winter conditions one should assume the vaporization rate of a 47 kg
cylinder to be approximately 53,000 KJ per hour. Thus a load requirement of 106,000 KJ per hour would be
catered for by 2 x 47 kg cylinders.
1 kg propane
1 litre (liquid) propane
0.43 gallons/liquid
1.96 litres/liquid
540 litres/gas
0.54 cubic metres/gas
18.92 cubic feet/gas
47,390 Btu gross, 44,070 Btu net
50,000 KJ gross, 46,500 KJ net
0.220 gallons/liquid
275 litres/gas (at 15°C–latm)
0.275 cubic metres gas (at 15°C–latm)
9.7 cubic feet gas (at 15°C–latm)
24, 170 Btu gross, 22250 Btu net
25,500 KJ gross, 23470 KJ net
1.12 lbs
0.51 kg
Note: Commercial propane may contain variable amounts of other closely related hydrocarbons hence
averages have been used in the figures above.
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ISS/602115/UKS/BAMC/0615
Propane conversion table