Fast Red B Base

Specification : Fast Red B Base

Synonym : 2 Methoxy 4 Nitro Aniline Molecular Formula� :��C7H8N2O3
CAS No.� : 97-52-9 Molecular Weight :�168g/mol
Sr. No. PARTICULARS SPECIFICATION
1. Appearance Bright Golden Yellowish Powder
2. Assay� 99% Min.on� dry� basis
3. Impurities� byChromotography 2-Methoxy-5-No2� Aniline � 0.1% Max.
Other� impurities� 0.1% Max.
4. Residue� on� Diazotization Does� not� leave� more� than� 0.3% residue� after�1 1/2� hours� diazotization
5. Melting range 139-140�C
6. Fineness (through 40� mesh� screen� size�� opening� 0.42 MM )�������������������� 99.8%� Min.
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