Cyclotetrasiloxane, octamethyl-
time:2012-10-12 16:12:57,count:0

Cyclotetrasiloxane, octamethyl-
Alias
Octamethylcyclotetrasiloxane
Category
Silicone surfactant-Non-ionic
CAS No.
556-67-2
Molecular Formula & Molecular Weight
Molecular Formula: C8H24Si4O4
Molecular Weight: 296.62
Structural Formula
Properties
Appearance: liquid. low temperature: solid.
Solubility: insoluble in water.
Melting point[1]: 17.5℃.
Stability: stable.
Risk: irritation, irritation to skin, eye.
Animal toxicity[1]: rat oral LD50: 1540mg/Kg; rat skin LD50: 1770mg/Kg.
Ecology: May be hazardous to environment. Water body should be given special attention.
Biodegradability: biodegradable.
Characteristics: excellent dispersing, adsorbing, defoaming, brightening, lubricating abilities.
Synthesis
 
Quality standards & test methods
item
physical and chemical indexes
test methods
actives*, %, ≥
90
 
*: should be marked on molecular weight.
Major Uses
Conditioning agent, emollient, solvent in personal care products.
Use as defoaming agent.
Use as lubricant.
Manufacturers
 
References
[1]:http://toxnet.nlm.nih.gov/:556-67-2
Update: 20140828(1);

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