R404a
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 |
Packing：10.9kg/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 |