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7.
Laboratory preparation method
Put 259 g of anhydrous meta-nitroaniline into 1000 mL of chlorobenzene, and then add 327 g of 2,3-acid
.
Under heating and stirring, a mixed solution consisting of 105 g of phosphorus trichloride and 75 g of chlorobenzene was added dropwise
8.
Product Standard
9.
Product use
Ice dye naphthol
.
It is mainly used for dyeing and printing of cotton fiber and hemp fiber, and also used as an intermediate for the synthesis of fast pigments and organic pigments
10.
Security measures,
(1) Toxic or irritating raw materials such as meta-nitroaniline, phosphorus trichloride, chlorobenzene and 2-hydroxy-3-naphthoic acid are used in production
.
The reaction equipment should be airtight to prevent leakage.
(2) This product is poisonous and is packed in iron drums lined with plastic bags and stored in a cool, dry and ventilated warehouse
.
Keep away from fire and heat sources, prevent sunlight, avoid heat and moisture
Related links: Product performance and production principle of 2-hydroxy-3-naphthoyl meta-nitroaniline