氟化学制冷剂

产品名称：二氟一氯乙烷（R142B）

分子式：CH₃CC1F₂

CAS登录号：75-68-3

理 化 特 性：

外观与性状：无色气体。

熔点（℃）：-131                   沸点（℃）：-9.6

相对密度（水=1）：1.2              相对蒸气密度（空气=1）：3.7

饱和蒸气压（kpa）：338             燃烧热（KJ/mol）：无意义

临界温度（℃）：136.45             临界压力（MPa）：4.15

辛醇/水分配系数的对数值：无资料   闪点（℃）：无意义

引燃温度（℃）：633                爆炸上限%(V/V)：17.9  

溶解性：在水中为0.14%（W）        爆炸下限%(V/V)：6.3

燃爆危险：易燃气体。

产品用途：

R142b作为普遍性使用的高温制冷剂，主要用于高温环境下的制冷空调系统（高温空调）、热泵、多种配混冷媒的重要组分，以及聚合物（塑料）发泡、恒温控制开关及航空推进剂的中间体，同时还有用作化工原料。

包装规格：

一次性钢瓶：22lb/10kg，30lb/13.6kg；可循环使用钢瓶：800L、926L。

储存运输：

R142b制冷剂钢瓶为带压容器，储存时应远离火种、热源、避免阳光直接曝晒，通常储放于阴凉、干燥和通风的仓库内；搬运时应轻装、轻卸，防止钢瓶以及阀门等附件破损。

Product Name: 1-Chloro-1,1-difluoroethane (R142b)

Molecular Formula: \mathrm{CH_3CClF_2}

CAS No.: 75-68-3

Physical and Chemical Properties

Appearance and Odor: Colorless gas.

Melting Point (℃): -131

Boiling Point (℃): -9.6

Relative Density (Water=1): 1.2

Relative Vapor Density (Air=1): 3.7

Saturated Vapor Pressure (kPa): 338

Heat of Combustion (kJ/mol): Not applicable

Critical Temperature (℃): 136.45

Critical Pressure (MPa): 4.15

Octanol-Water Partition Coefficient: No data available

Flash Point (℃): Not applicable

Autoignition Temperature (℃): 633

Upper Explosion Limit (V/V): 17.9%

Lower Explosion Limit (V/V): 6.3%

Solubility: 0.14% (W) in water

Fire and Explosion Hazard: Flammable gas.

Product Application

Widely used as a high-temperature refrigerant, R142b is mainly applied in refrigeration and air conditioning systems operating under high-temperature conditions, heat pumps, and serves as a key component of various blended refrigerants. It is also used as a physical blowing agent for polymers, an intermediate for thermostatic control switches and aerospace propellants, as well as a chemical raw material.

Packaging Specifications

Disposable Cylinder: 22lb/10kg, 30lb/13.6kg

Recyclable Cylinder: 800L, 926L

Storage and Transportation

R142b refrigerant cylinders are pressure vessels. During storage, keep away from ignition sources and heat sources, and avoid direct sunlight. Store in a cool, dry and well-ventilated warehouse. Handle with care during loading, unloading and transportation to prevent damage to cylinders, valves and other accessories.