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Name：J acid
Molecular formula：C10H9NO4S
Molecular weight：239.25
Structural formula：
CAS NO：87-02-5
Appearance：White or light gray crystalline, crystalline powder.
Solubility：Slightly soluble in cold water, soluble in hot water, almost insoluble in ethanol. Dissolve in alkaline solution such as soda ash and caustic soda.
Toxicity：LD50(mg/kg) rat LD11500 mg/kg orally
Purpose：Dye intermediate. It is mainly used for the preparation of direct green lotus R, direct fast blue FRL, direct fast gray 2BL, direct copper salt blue 2R, direct acid-resistant purple, direct peach, direct copper dyed navy blue, fast blue B2R, direct jujube red GB, and reactive red, orange, brilliant orange X-GN, gray, grass green, red brown and other dyes. It is also used to prepare dij-acid, scarlet acid and phenyl-J-acid.
Storage：It should be sealed and kept away from light. Store in a dry, clean house, prevent exposure to the sun, rain. When placed, the mouth of the box (bucket) is upward to avoid product leakage.
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