Home » Import FAQ » About R32 Gas

An Encyclopedia on Refrigerant Gas Knowledge

Classification

Q Introduction of Refrigerant Gas R32

A

Basic Introduction

Difluoromethane is an organic substance with a molecular formula of CH2F2 and a molecular weight of 52.02. It is a colorless gas and is partially miscible with water.

Used as a dry engraving agent, a substitute for low-temperature refrigerant R-502, or as a mixed refrigerant with HFC-134a and HFC-152a to replace HCFC-22

Chinese name Difluoromethane

CAS NO. 75-10-5

Chinese alias HFC-32

English name difluoromethane

English alias R-32

Molecular formula CH2F2

Molecular weight 52.02

CAS Number: 75-10-5

MDL number: MFCD00039283

EINECS number: 200-839-4

RTECS number: PA8537500

Physical Properties of R32 Gas

Physical property:
molecular formula	CH2F2
molecular weight	52.02
melting point,℃	-136
density(25℃) liquid, g/cm³	0.96
critical temperature,℃	78.52
critical density ,g/cm³	0.43
water solubility℃,W%	0.44
ODP	0
GWP	675

Quality Index of R32 Gas

Quality index
purity,%	above 99.93%
moisture,%	≤0.001
acidity,%	≤0.0001
evaporated residue,%	≤ 0.01
chloride (cl-)experiment	test permition
noncondensable gas(v/v),%	1.5
appearance	colorless transparent liquefied gas

Application of R32 Gas

Difluoromethane is a coolant with zero ozone depletion potential. Difluoromethane and pentafluoroethane can form a constant boiling mixture (called R-410A), which can be used as a substitute for chlorofluorocarbons (also known as Freon) in new coolant systems, mainly to replace HCFC-22 , As a compound medium and low temperature mixed refrigerant. Although it has zero ozone depletion potential, it has a high global warming potential, and its potential is 550 times that of carbon dioxide on a 100-year basis.

Q R32 Refrigerant Temperature and Relative Pressure

A

R32 Refrigerant Temperature and Relative Pressure
Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa
℃	kg/cm²	℃	kg/cm²	℃	kg/cm²
-51.909	1	18.138	14	43.55	27
-43.635	1.5	19.395	14.5	44.32	27.5
-37.323	2	20.619	15	45.079	28
-32.15	2.5	21.813	15.5	45.828	28.5
-27.731	3	22.978	16	46.567	29
-23.85	3.5	24.116	16.5	47.296	29.5
-20.378	4	25.229	17	48.015	30
-17.225	4.5	26.317	17.5	48.726	30.5
-14.331	5	27.382	18	49.428	31
-11.65	5.5	28.425	18.5	50.121	31.5
-9.1503	6	29.447	19	50.806	32
-6.8046	6,5	30.448	19.5	51.482	32.5
-4.6925	7	31.431	20	52.15	33
-2.4975	7.5	32.395	20.5	52.811	33.5
-0.50613	8	33.341	21	53.464	34
1.393	8.5	34.271	21.5	54.11	34.5
3.2092	9	35.184	22	54.748	35
4.9506	9.5	36.082	22.5
6.624	10	36.965	23
8.2352	10.5	37.834	23.5
9.7896	11	38.688	24
11.291	11.5	39.529	24.5
12.745	12	40.358	25
14.153	12.5	41.173	25.5
15.52	13	41.977	26
16.847	13.5	42.769	26.5

Temperature Unit: centigrade

Remark: 1KPa≈0.01kg/cm2=0.001MPa，1kg/cm2 ≈98.0665KPa≈0.1MPa

An Encyclopedia on Refrigerant Gas Knowledge

Classification

Q Introduction of Refrigerant Gas R32

Q R32 Refrigerant Temperature and Relative Pressure

QUICK LINKS

PRODUCT CATEGORY

CONTACT US

GET IN TOUCH