| Products name: |
J Acid |
| Molecular Formula: |
C10H9NO4S |
| |
 |
| Other name: |
2-Amino-5-naphthol-7-sulfonic Acid |
| Cas No.: |
87-02-5 |
| Molecular weight: |
239.25 |
| Index: |
|
Grade A |
Grade B |
Appearance : Greyish white to greyish brown powder |
Coupling value : |
92%min. |
92%min. |
Solubility : |
4% max. |
4% max. |
|
| Property: |
Slight soluble in hot water and hardly soluble in alcohol. Its alkali salts are easily soluble in water. Solution of J acid gives a brownish black precipitate met with hot ferric chloride, and gives a yellowish brown precipitate met with calcium chloride. It couples with diazotised bases at the 1-place in acidic medium and at the 6-place in alkali medium. |
| Uses: |
An important intermediate of dyestuffs. A large number of reactive or direct dyes are manufactured from N-Aryl-J-Acid, Bis-J-acid, Carbony-J-Acid and other derivatives of J Acid. |
| Packing: |
Packed in multiple paper bag lined with plastic bag. 25kg/bag. |
