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Shanghai Yiji Industrial Co., Ltd
2-Sulfonylbenzoic anhydride
NegotiableUpdate on 05/06
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Overview
2-Sulfonylbenzoic anhydride 81-08-3 99% g/kg standard reference product has sufficient supply and quality assurance. The large packaging can be customized and shipped upon order. Some products require pre order and will be arranged for delivery within 1-2 working days after placing the order. The molecular formula C7H4O4S of 81-08-3 has a molecular weight of 184.17.
Product Details
2-Sulfonylbenzoic anhydride81-08-3 99% g/kg standard reference substance
Chinese name2-Sulfonylbenzoic anhydrideChinese synonym for sulfonamide; 3H-2, 1-Benzothiol-3-one-1,1-dioxide; Ortho sulfobenzoic anhydride; 2-Thiobenzoic anhydride; 2-Sulfonic acid benzoic anhydride; Sulfonylbenzoyl anhydride; 2-Thiobenzoic anhydride, 94%; 2,1-Benzothiol-3-one-1,1-dioxide
Point 116-124 ° C Boiling point 184-186 ° C18mmHg (lit.) Density 1.6114 (roughness) Refractive index 1.6290 (estimate) Flash point 184-186 ° C/18mm Storage conditions Storebelt+30 ° C. Solubility in toluene form crystals or crystalline powders Color white to beige Sensitivity Overview 2-sulfobenzoic anhydride is an acid anhydride derivative that can be used in the pharmaceutical and chemical industries. The application examples of 2-sulfobenzoic anhydride are as follows: 1. Preparation of flame retardant and light resistant waterborne polyurethane coatings; 2. Preparation of a carbon nanotube graphene modified waterborne polyurethane coating and adhesive. The preparation of 2-sulfobenzoic anhydride is as follows: Under N2 protection, 9.0g of saccharin solid and 13mL of concentrated sulfuric acid (concentration 98%) are sequentially added to a 50mL three necked flask, stirred at 140 ℃ for 2 hours, cooled to room temperature, and a large amount of solid is precipitated in the reaction mixture. The filtered solid is washed with ice water and dried to obtain 7.3g of white 2-sulfobenzoic anhydride with a yield of 81%.
2-Sulfonylbenzoic anhydride81-08-3 99% g/kg standard reference substance
