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Red No.228
| Legal color: | Red No.228 | | General name: | Permaton Red | | Class: | | | FDA : | | | CI #: | C.I. 12085 | | Color #: | Pig. Red 4 | | CAS #: | 2814-77-9 | | CAS : | ：2-Naphthalenol,1-[(2-chloro-4-nitrophenyl)azo]- | | IUPAC: | →1;1-(2-Chloro-4-nitrophenylazo)-2-naphthol |
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