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Naphthol Dyes & Fast Color Base
CAS number:
Molecular formula:
Molecular weight:
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CAS

Appearance

Content

Strength

Melting

2-hydroxy-3-naphthoic acid content

Naphthol AS

92-77-3

Creamy-white

powder

99%

100±5

247

0.09%

Naphthol AS-BO

132-68-3

Light beige powder

99%

100±5

217

0.1%

Naphthol AS-G

91-96-3

Light creamy-white

powder

98%

/

204~205

/

Naphthol AS-E

92-78-4

Creamy-white

powder

99%

100±5

257

 0.1%

Naphthol AS-BS

135-65-9

Light beige powder

99%

100±5

242

0.09%


















 

CAS

Appearance

Content

Strength

Melting

Insoluble substance in HCL

Fast Scarlet Base G

92-77-3

Yellow powder

99%

100±3

104°C

0.2%

Fast Red RC Base

4274-03-7

Grayish white to milk white powder

99%

100±5

/

0.2%

Scarlet RC Base

27165-17-9

Grayish white powder

90%

100±3

300

0.2%

Fast Garnet GBC

101-89-3

Brown powder

90%

100

/

0.2%