Product name

Appearance

Assay(min)

Melting point
(℃)(min)

Insoluble matter (max)

Naphthol AS-ITR

light gray green powder

99.0%

198

0.10%

Naphthol AS-CA

off-white powder

99.0%

215

0.15%

Naphthol AS-KB

off-white powder

99.0%

243

0.15%

Naphthol AS-OL

cream-brown powder

98.5%

161

0.15%

Naphthol AS-OL(refined)

off-white powder

99.5%

163

0.06%

Naphthol AS-LC

off-white powder

99.0%

190

0.15%

Naphthol AS-LC(refined)

off-white powder

99.5%

191

0.10%

Naphthol AS-PH

light cream-brown powder

98.5%

156

0.15%

Naphthol AS-PH(refined)

off-white powder

99.5%

158

0.06%

Naphthol AS-IRG

white crystal

99.5%

105

0.03%

Naphthol AS

off-white powder

98.5%

246

0.15%

Naphthol AS-D

cream-brown powder

98.5%

194

0.15%

Naphthol AS-E

light off-white powder

98.5%

256

0.15%