p-Toluene Sulphonic Acid
time:2012-09-28 16:32:57,count:0

p-Toluene Sulphonic Acid
Alias
4-methylbenzenesulfonic acid
p-Toluenesulfonic acid
Toluene-4-sulphonic acid
Tosic Acid
PTSA
Category
Anionic surfactants-Sulfonate
CAS No.
104-15-4
Molecular Formula & Molecular Weight
Molecular Formula: C7H8SO3
Molecular Weight: 172.20
Structural Formula
Properties
Appearance: white crystal; or liquid.
Solubility: soluble in water; soluble in alcohol.
Hygroscopicity: hygroscopic.
Stability: stable.
Risk: corrosion. irritation, moderate irritation to skin, eye.
Animal toxicity[1]: rat oral LD50: 400mg/Kg.
Ecology: May be hazardous to environment. Water body should be given special attention.
Biodegradability: biodegradable.
Characteristics: excellent cleansing, hydrotropic, viscosity reducing, pour point depressing, anti-caking, dispersing abilities. paper, wood can be carbonized.
Synthesis
 
Quality standards & test methods
item
physical and chemical indexes
test methods
liquid
solid
Actives*, %, ≥
50-80
98
 
pH (25℃, 1%)
7.0-9.5
7.0-9.5
 
*: should be marked on molecular weight.
Major Uses
Prepared alkali metal salt or amine salt of p-toluenesulfonic acid.
Use as acidic catalyst in organic synthesis.
Use as cleansing agent.
Manufacturers
 
References
[1]:http://toxnet.nlm.nih.gov/: 104-15-4
Update: 20131025(1);

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