氯乙烯單體（VCM）

配方

說明

Vinyl Chloride Monomer (VCM, Monochloroethylene) is a reactive gas with a faint odor and is extremely flammable. Under refrigeration, VCM is converted into liquid with a density of 0.91 gm/cc.
VCM is sparingly soluble in water and soluble in alcohol.

屬性

	Unit	Quantity / Description
Molecular weight	g/mol	62.5
B.P. at 1.0 atm	°C	-13.8
Freezing point	°C	-158.8

規格

	Unit	Quantity / Description
Purity	% mol	99.9 min
Color		colorless
Appearance		clear
Ethylene	ppm, mol	2 max
Acetylene	ppm, mol	2 max
Propylene	ppm, mol	3 max
1-3 Butadiene	ppm, mol	10 max
Total dichloro compound	ppm, mol	20 max
Water	ppm, wt	100 max
Acidity as HCL	ppm, wt	2 max
Iron	ppm, wt	0.5 max
Non volatile residue	ppm, wt	100 max
Hydroquinone	ppm, wt	2 min 5 max

危險與安全

VCM is extremely flammable and known as a human carcinogen. Large fires triggered by VCM are difficult to extinguish. It has dangerous toxic effects when absorbed by the skin or inhaled. It also causes severe irritation of the eyes.

	Unit	Quantity
Threshold limit value	ppm	1
Flash point	°C	-78
Explosive limits	vol % in air	3.6-33

應用

About 98% of VCM production is polymerized to produce Polyvinyl Chloride (PVC), a commonly used plastic, particularly in the piping and construction industries.

儲存與處理

VCM is stored as a liquid at -14°C to -22°C in large spherical steel tanks with 56 ppm of hydroquinonme stabilizer. Avoid contact with copper, any ignition source or heat. Keep away from oxidizing agents, caustic soda and reactive metals. Wear goggles, selfcontained breathing apparatus and rubber over clothing.

包裝

VCM stabilized liquid is shipped in spherical refrigerated steel tanks. Between loads, the vessel tank must be carefully dried, then purged with nitrogen. VCM in a gaseous form must be controlled carefully under refrigeration.

UN or ID No. 1086.

營運公司

Arabian Petrochemical Company (PETROKEMYA).