18禁高潮出水呻吟娇喘蜜芽_性久久久久久久_国产精品人妻无码久久久久_免费无码的av片在线观看_亚洲伊人久久大香线蕉AV_国产av福利久久_337p日本欧洲亚洲高清鲁鲁_欧美激情第一欧美精品图片_性色A∨人人爽网站_欧美成人一区二区三区不卡

Aminosulfonic acid

The molecular formula of the sulfamic acid is NH2S03H. Commercial goods for the white powder, at room temperature, as long as the dry does not contact with water, solid sulfamic acid is not moisture,

Ammonium sulfamate

Nature: white crystal. Soluble in water, molecular weight 114.12, easy to absorb moisture in the air, insoluble in methanol and ethanol.

Amino sulfonic acid uses

Amino sulfonic acid is widely used in acid cleaning agents, such as boiler cleaning, metal and ceramic cleaning equipment; heat exchangers, coolers and engine water cooling system cleaning agent

Liquid guanidine hydrochloride

Liquid guanidine hydrochloride (CH5N3.HCL) CAS: 50-01-1 Structural formula: Molecular formula: CH5N3.HCL Molecular weight: 95.53

The development of flame retardants

Since the early 1950s, more than 60 years, especially since the early 1980s, flame retardants (FR) and flame-retardant polymer materials have played an important role in reducing the loss of life and