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| 1- NAPHTHOL - 5 - SULPHONIC ACID ( OXY - L - ACID ) |
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| 1- NAPHTHOL - 5 - SULPHONIC ACID ( OXY - L - ACID ) |
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| USES : INTERMEDIATE FOR DYE STUFFS |
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1- NAPHTHOL - 5 - SULPHONIC ACID ( OXY - L - ACID ) CAS NO. : 117-59-9
NAME OF PRODUCT : 1- Naphthol-5- Sulphonic Acid
( OXY - L - ACID )
SYNONYMS : OXY - L - ACID
MOLECULAR WEIGHT : 224 ( Free Acid ) 246 ( Sodium Salt )
EMPIRICAL FORMULA :
STRUCTURAL FORMULA :
DESCRIPTION : Grey to Greenish Press Cake
PURITY : 55 - 60% ( On Mol. Wt. 224 )
MOISTURE : 25 - 30% ( On Mol. Wt. 224 )
FREE SO2 CONTENT : 0.1 - 0.2 %
BALANCE : INORGANIC SALTS LIKE Nacl, Na2So4
NAPHTHALENE-1,5-DISULPHONIC ACID : 0.5% W/W MAX. ON 100% BASIS
1,5-DIHYDROXYNAPHTHALENE CONTENT : 0.2 % MAX.
INSOLUBLES IN DILUTE NA2CO3 : 0.2% W/W MAX. ON 100% BASIS
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