R404a is azeotropic mixture type HFC refrigerant, composition: R125: R143a: R134a=44:52:4

Molecular weight: 97.6

HS No.: 38247800

UN No.: 3337

I.Physicochemical properties:

1. Appearance and property: Colorless gas.

2. Boiling point: -46.4°C

3. Liquid weight (D20°): 1.045  

4. Critical temperature: 72.1 °C

5. Critical pressure: 3.728MPa

6. Critical volume: 0.00194M3/Kg

7. Critical density : 515.3g/cm3

8. Vapor pressure: 666.1KPa (25°C)

9. HGWP:0.28

10. GWP:0.083

11. ODP: 0 

II. Usage

R404a is applied in industrial refrigerating system instead of R-502 and R-22. R-404a is widely used in cabinet freezer in supermarket, refrigeratory, showcase, transportation refrigeration, etc.

III. Quality standard

Item	Superior	First class
Purity ≥ (m/m) %	99.8	99.5
Acidity (Calculated by HCI) ≤(m/m)ppm	0.1	1
Moisture ≤(m/m)ppm	5	10
Residue after evaporation≤ (v/v) ppm	100	100
Non-condensable gases ≤25°C (v/v) %	1.5	1.5
Chloride content	Qualified	Qualified
Appearance	Colorless and clear	Colorless and clear
Odor	-	Odorless

IV. Packing, storage and transportation Hazard rank: 2.2 type gas

Hazard cargo packing mark: 5

Packing type: III

Packing: Can 220g, 250g, 280g, 300g, 340g, 500g, 800g, 1000g; disposable steel cylinder 24lb/10.9kg; recycled steel cylinder 400L, 800L, 926L, 1000L; ISO-TANK. Filling ratio is smaller than 0.8Kg/L.