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Anonymous users2024-02-15Please wait, ** review may be slower.
Chinese name: acetaminobenzenesulfonyl chloride; 4-acetaminobenzenesulfonyl chloride; N-acesulfame chloride.
Molecular formula: C8H8ClNO3S
Melting Point: 145-148
Properties: Light brown acicular (from benzene) or prismatic (from benzene and chloroform) crystals. Melting point 149 (decomposition). Soluble in benzene, ether, chloroform and dichloroethane. It is easy to absorb moisture and decompose in the air. There is a slight smell of acetic acid.
Production Method: Acetanilide Chlorosulfonation The following are two examples of industrial operations. Operation example 1 Add acetamide benzene to 290kg of chlorosulfonic acid under stirring, control the feeding temperature below 15, gradually increase the temperature to 60 after adding, keep warm and stir for 2h, and then gradually add the reactant to dilution in ice water, keep the temperature below 10, filter, and rinse with ice water until the Congo red test paper is neutral.
Acetaminobenzene sulfonyl chloride is obtained. Operation example 2 Acetamide benzene is evenly added to chlorosulfonic acid below 20, and acetanilide:chlorosulfonic acid is reacted at 50 2 for 3 h by weight.
After 8 hours, about 20 below, add an appropriate amount of water to decompose the excess chlorosulfonic acid, the temperature is not more than 28, slightly cold, filter, wash the filter cake to pH = 3-4, and obtain acetylaminosulfonyl chloride. The yield was 83%. The product should not be stored for a long time, as an intermediate product in the production of medicine and dyes, the content is 30%.
Uses: Intermediates of a variety of sulfonamide drugs, such as sulfathiazole, sulfamethoxazole, sulfamethoxazole, sulfadioxazole, sulfamethoxazole, sulfadimethoxazole, etc. It is also an intermediate of dyes.
Please see the diagram for the structure.
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Anonymous users2024-02-14CB number: CB4452614
English name: ASC
Chinese name: p-acetamidebenzene sulfonyl chloride.
Molecular formula: C8H8ClNO3S
Molecular Weight: CAS number: 121-60-8
Product Chinese synonyms].
p-acetamide benzenesulfonyl chloride.
4-acetaminobenzenesulfonyl chloride;
N-acesulfame chloride.
Acetaminobenzenesulfonyl chloride.
N-acetyl-p-aminobenzenesulfonyl chloride.
Chloro-N-acetyl-p-aminobenzenesulfonyl.
Chloro-N-acetylsulfamerate.
4-acetamidebenzenesulfonyl chloride.
4-Acetamidebenzenesulfonyl chloride, 98+%.
4-Acetamidobenzenesulfonyl chloride, 98+%.
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Anonymous users2024-02-13Arsenic trisulfide. Arsenic trisulfide is an inorganic compound.
The chemical formula is AS2S3, also known as arsenic sulfide, and the ore is called orpiment, which is realgar (arsenic disulfide.
The symbiotic minerals share the "mineral mandarin duck" to bury the balance.
1) It has anti-tumor effect, can inhibit the growth of transplanted mouse sarcoma S-180, and has a corrosive effect on cells.
2) After absorption, it has antispasmodic and analgesic effects on nerves; It has an insecticidal effect both inside and outside the body. Water immersion agent against Staphylococcus aureus and human Mycobacterium tuberculosis.
Proteus, Pseudomonas aeruginosa and a variety of ** fungi have different degrees of inhibitory effects.
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