对甲苯磺酸酐（p-Toluenesulfonic anhydride）CAS NO.4124-41-8，中文名
4-甲苯磺酸酐，分子式C14H14O5S2。
S26In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39Wear suitable protective clothing, gloves and eye/face protection.
S45In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
R34 Causes burns.