p-Toluenesulfonic acid CAS#104-15-4

CAS Number: 104-15-4
Chemical Formula: C7H8O3S
Synonyms:

TL65
toluenesulfonicacid,liquid,withmorethan5%freesulfuricacid
PARATOLUENE SULPHONIC ACID

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

p-Toluenesulfonic acid CAS#104-15-4

p-toluene sulfonic acid (Its molecular structural formula is p-CH3C6H4SO3H, also known as TsOH, English name is p-toluene sulfonic acid) referred to as PTS, is a non-oxidizing organic acid, white needle or powder crystals, soluble in water, alcohols, ethers and other polar solvents. Easy deliquescence, easy to make wood, cotton fabric dehydration and carbonization, insoluble in benzene and toluene. generating p-cresol when alkali fusion. Commonly, p-toluenesulfonic acid-monohydrate (TsOHH2O) or tetrahydrate (TsOH4H2O) is preferred.
Preparation of methyl p-cresol acid in industry is by using concentrated sulfuric acid on the toluene sulfonation of p-toluenesulfonic acid. The preparated p-toluenesulfonic acid often contains benzene sulfonic acid and sulfuric acid impurities, can be purified in recrystallization of concentrated hydrochloric acid, azeotropic drying.
p-toluene sulfonic acid is widely used as catalyst agent in the synthesis of pharmaceuticals, pesticides, polymerization stabilizer and organic synthesis (esters, etc.), paint intermediates and resin curing agent. And it is also the commonly used acid catalyst in organic synthesis. It is neutralized with sodium hydroxide and then obtains sodium p-toluene sulfonate, and react with phosphorus pentachloride, can obtains p-toluenesulfonyl chloride. The latter used in the nucleophilic substitution reaction, also used as alcohol hydroxyl protective group. p-CH3C6H4SO3Na + PCl5 →p-CH3C6H4SO2Cl.
The use of p-toluenesulfonic acid also catalyzes the protection of dihydrofuran on the alcohol, carboxylic acid esterification, transesterification reaction, making the aldehyde generate acetal.

p-Toluenesulfonic acid Chemical Properties

Melting point	106~107℃
Boiling point	116 °C
density	1.07
vapor pressure	69.8Pa at 20℃
refractive index	1.3825-1.3845
Fp	41 °C
storage temp.	Inert atmosphere,Room Temperature
solubility	DMSO (Slightly), Methanol (Slightly)
pka	-0.43±0.50(Predicted)
form	Solution
color	Clear colorless to light yellow
Odor	pungent odor
Water Solubility	soluble
Cosmetics Ingredients Functions	SURFACTANT - HYDROTROPE SURFACTANT - CLEANSING
LogP	0.41 at 25℃
CAS DataBase Reference	104-15-4(CAS DataBase Reference)
NIST Chemistry Reference	P-toluene sulfonic acid(104-15-4)
EPA Substance Registry System	4-Methylbenzenesulfonic acid (104-15-4)

Safety Information

Hazard Codes	C
Risk Statements	34-10
Safety Statements	45-26-23
RIDADR	2585
TSCA	TSCA listed
HazardClass	8
PackingGroup	III
HS Code	29163990
Hazardous Substances Data	104-15-4(Hazardous Substances Data)

Product Application of p-Toluenesulfonic acid CAS#104-15-4

1) For chemical reagents, but also for dyes, organic synthesis.
(2) Used as the intermediates of medicine (such as doxycycline), pesticides (such as dicofol), dyes. Also used in detergents, plastics, coatings and so on.
(3) For medicine, pesticides, dyes and detergents, but also for plastics and printing coatings.
(4) Widely used in the catalyst synthetic medicine, pesticides, polymerization of the stabilizer and organic synthesis (esters, etc.). Also used as medicine, paint intermediates and resin curing agent.

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