Q
R404a
A
  

R404A

R404Ais a colorless gas under ordinary temperature, and a colorless &transparent liquid under the pressure of itself,     mixedby R125, R134a and R143. It is a long-term substitute for R502, mainly used inthe refrigerating systems of low & moderate temperature.

Properties

 

Unit

R404A

Chemical formula

 

R-134a/R-125/R-32

Molecular weight

g/mol

 

Melting point

-46.1

Critical temperature

72.4

Critical pressure

MPa

3.69

Saturated liquid density (25)

g/cm3

1.045

ODP

 

0

GWP

 

0.35

 

QualitySpecification

Index

Excellent Grade

Appearance

Colorless , not turbid

odor

No strange stench

Purity % ≥

99.8

Moisture % ≤

0.001

Acidity (as HCl) % ≤

0.00001

Evaporation residue % ≤

0.01

Chlorides(Cl-) test % ≤

0.0003

No condensable gas (V/V) % ≤

1.5

 

Packing10.9kg/30p steel cylinders or ISO TANK.

Itmust be kept in cool, dry and well-ventilated places, away from sunshine andrainfall.

 

 

性状用途:

R404A由R125,R134a和R143混合而成,在常温下为无色气体,在自身压力下为无色透明液体,是R502的长期替代品,主要用于低、中温制冷系统。

 

物理性质 :

 

 单位

 R404A

 分子式

 

 R-134a/R-125/R-32

 分子量

 g/mol

 

 沸点

 

 -46.1

 临界温度

 

 72.4

 临界压力

 MPa

 3.69

 饱和液体密度 (25℃)

 g/cm3

 1.045

 ODP

 

 0

 GWP

 

 0.35(HGWP)

 

质量指标 :

 指标名称

 优等品

 外观

 无色、澄清

 气味

 无异臭

 纯度 ( % ≥)

 99.8

 水份( % ≤)

 0.001

 酸度 ( 以HCl计 ) ,( % ≤)

 0.0001

 蒸发残留物 ( % ≤)

 0.01

 氯化物(Cl-) ( % ≤)

 0.0003

 不凝性气体的体积分数 ( % ≤)

 1.5

 

  

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