亚洲国产综合成人一区二区_黄色1级毛片视频_正在播放肥臀熟妇在线视频_日本特黄免费电影久久_亚洲欧洲日产国码写真福利_赤坂丽女医性肉奴_免费在线观看污污视频_日本zzzwww大片免费_国产成年无码aⅴ片在线_亚洲av最新精品每天更新

Product Categories
Contact us

Add: 8 Guangming Road, Chenghe Town, Xiangyang District, Xiangfan City, Hubei, China 
Contact Person: Manager Liu 
Tel: +86-710-2741666
Mobile: +86-13908679683
Fax: +86-710-2741888

ProductsYour current location is:Products >> R290
R290
R290

R290

Propane

Executive standard Q/JBG 0001-2007

Molecular formula C3H8 Molecular weight 44.9

Quality standard

Item Quality index
Superior product First-class product
Propane content (mol), % ≥ 99.8 99.6
Component of butane or above (V/V)% ≤ 0.2 0.4
Sulphur content (mg/m3) ≤ 0.5 1
Water content (v/v)% ≤ 0.001 0.001
Residue ml/100ml ≤ 0.01 0.05
Acidity (as HCL), % ≤ 0.0001

0.0001

Odor No odor No odor

Physical properties

Boiling point, ℃ -42.2 Critical density, g/cm3 0.220
Density (25℃), liquid, g/cm3 0.49 Evaporation potential at boiling point, kj/kg 410.5
Vapor pressure (25℃), MPa 0.475 Specific heat (liquid 25℃)kj/kg.℃ 1.64
Critical temperature (℃) 96.67 ODP 0
Critical pressure, MPa 4.24 GWP 0.01

Uses

High-purity R290 can be used as temperature sensing working medium;
Superior and first-class R290 can take the place of HCFC-22

Packing

4.54kg; 5kg; 25kg; 50kg; 200kg; 400kg; steel cylinder