Hexamethylcyclotrisiloxane|CAS#541-05-9|2,2-Dipyridyl|bpy|D3|2-Aminothiazole-Clent Chemical

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p-Toluenesulfonic anhydride

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Product name	p-Toluenesulfonic anhydride
Synonyms	Tosic anhydride; 4-Toluenesulfonic acid anhydride
CAS NO.	4124-41-8
Assay	98.0%
Appearance	Off-white to white crystalline powder
Loss on drying	0.5%
EINECS	223-926-9
Molecular formula	C₁₄H₁₄O₅S₂
Molecular weight	326.39
Structural formula
Density	1.361g/cm
Melting point	124-126℃
Boiling point	478°C at 760 mmHg
Flash point	242.9°C
Vapor pressure	7.72E-09mmHg at 25°C
Storage temperature	2-8℃
Package	25kg/drum in cold environment
Usage	Pharmaceutical intermediates and organic synthesis intermediates