Difluoromethane

Chemical Name: Difluoromethane
CAS Number: 75-10-5
Molecular Formula: CH₂F₂
Molecular Weight: 52.02 g/mol
Common Name: R-32 (as a refrigerant)
Difluoromethane (R-32) is a colorless, non-toxic, and slightly flammable hydrofluorocarbon (HFC) with excellent thermal performance. As a next-generation eco-friendly refrigerant, it has become a key alternative to traditional high-GWP (Global Warming Potential) refrigerants, widely recognized for its balance of efficiency, safety, and environmental friendliness.

Product Overview

Chemical Name: Difluoromethane

CAS Number: 75-10-5

Molecular Formula: CH₂F₂

Molecular Weight: 52.02 g/mol

Common Name: R-32 (as a refrigerant)

Difluoromethane (R-32) is a colorless, non-toxic, and slightly flammable hydrofluorocarbon (HFC) with excellent thermal performance. As a next-generation eco-friendly refrigerant, it has become a key alternative to traditional high-GWP (Global Warming Potential) refrigerants, widely recognized for its balance of efficiency, safety, and environmental friendliness.

Key Properties

Property	Specification	Advantage
Boiling Point (at 1 atm)	-51.6°C (-60.9°F)	Enables efficient heat transfer in low - temperature applications
GWP (Global Warming Potential, 100 - year)	675	Significantly lower than R - 410A (GWP = 2088) and R - 22 (GWP = 1810), reducing carbon footprint
ODP (Ozone Depletion Potential)	0	Zero damage to the ozone layer, compliant with international environmental regulations (e.g., Montreal Protocol)
Critical Temperature	78.1°C (172.6°F)	Suitable for air conditioning and heat pump systems operating in moderate to high - temperature environments
Flammability	Slightly flammable (A2L classification per ASHRAE 34)	Safe for most residential and commercial applications with proper design
Thermal Conductivity	High (better than R - 410A)	Enhances cooling/heating efficiency, reducing energy consumption of equipment

Typical Applications

R-32 is widely used in various industrial and consumer sectors due to its superior performance and environmental benefits:

Residential & Commercial Air Conditioning: As a primary refrigerant for split-type AC units, window ACs, and VRV (Variable Refrigerant Volume) systems. It replaces R-410A in new equipment, cutting energy use by 10-15%.

Heat Pumps: Ideal for air-source heat pumps (ASHPs) and water-source heat pumps (WSHPs), delivering stable heating performance even at low ambient temperatures (-10°C to 5°C).

Refrigeration Systems: Used in small to medium-sized refrigerators, display cases, and cold storage units, ensuring efficient cooling with minimal environmental impact.

Foam Blowing Agents: In some industrial processes, R-32 acts as a blowing agent for rigid polyurethane foams, improving foam insulation properties.

Organic Synthesis: Serves as a raw material in the production of fluorinated chemicals, including pharmaceuticals and specialty polymers.

Safety & Compliance

Safety Guidelines

Handling: Avoid direct contact with skin/eyes; use protective gloves, goggles, and respiratory equipment in poorly ventilated areas.

Storage: Store in a cool, dry, well-ventilated area away from open flames, high temperatures, and oxidizing agents. Use sealed, corrosion-resistant containers (e.g., steel or aluminum cylinders).

Transport: Comply with UN regulations for the transport of refrigerants (UN number: 3252); ensure cylinders are properly secured and labeled.

Regulatory Compliance

Meets ASHRAE 34 standards (A2L safety classification).

Compliant with the EU F-Gas Regulation (Regulation (EU) 2014/512), limiting F-gas emissions and promoting low-GWP alternatives.

Approved by major equipment manufacturers (e.g., Daikin, Mitsubishi Electric, Gree) for use in their latest AC and heat pump models.

Technical Data Sheet (TDS) Highlights

Parameter	Value	Test Method
Purity (min)	99.9%	GC (Gas Chromatography)
Moisture Content (max)	10 ppm	Karl Fischer Titration
Acid Content (max)	0.1 ppm	Titration
Non - Volatile Residue (max)	10 mg/kg	Gravimetry
Vapor Pressure (at 25°C)	1.72 MPa	Pressure Gauge

Why Choose Our Difluoromethane (R-32)?

High Purity: Consistent 99.9% purity ensures stable equipment performance and long service life.

Eco-Friendly: Low GWP (675) supports global carbon neutrality goals and meets strict environmental regulations.

Cost-Effective: Higher thermal efficiency reduces energy costs for end-users, while our bulk supply capabilities lower procurement costs.

Global Support: We provide technical consultation, safety training, and on-time delivery to customers worldwide, with certifications including ISO 9001 and REACH.