Product name:2-Naphthalenesulfonicacid, 7-amino-4-hydroxy-
CAS:87-02-5
Molecular Formula:C10H9NO4S
Formula Weight:239.25
Specification:25g
Description:Naphthalenesulfonicacid (2-naphthalenesulfonicacid), 7-amino-4-hydroxy- are light gray powder or granule, and the pure product is white needle-like crystal. Soluble in hot water, hardly soluble in cold water, almost insoluble in ethanol. Soluble in alkaline solutions such as soda ash and caustic soda.
2-naphthalenesulfonicacid, 7-amino-4-hydroxy- were prepared from 2-naphthalenesulfonicacid and 2-naphthalenesulfonicacid. After sulfonation and hydrolysis, 2-naphthalenesulfonicacid (2-naphthalenesulfonicacid) and 7-amino-4-hydroxy- were obtained.
2-naphthalenesulfonicacid, 7-amino-4-hydroxy- are important intermediates of dyes used in the manufacture of azo dyes, such as direct cyanine R, direct acid-fast gray 2BL, direct acid-fast violet, direct peach, direct copper dyeing, navy blue B2R, active bright red, bright orange, grass green and red brown, and also used in the manufacture of scarlet acid and phenyl J acid.
Density:1.627 g/cm3
Chemical property:gray to brown powder
Use:Serve as intermediates of dye.
Storage:In ventilate,cool and dry places.