Basic

CAS No.	74-39-5
Product Name	4-(4-Nitrophenylazo)resorcinol
Synonyms	Magneson I; Magneson; 2,4-Dihydroxy-4-nitroazobenzene; 3-hydroxy-4-[(4-nitrophenyl)hydrazono]cyclohexa-2,5-dien-1-one; (4E)-3-hydroxy-4-[(4-nitrophenyl)hydrazono]cyclohexa-2,5-dien-1-one
Molecular Formula	C12H9N3O4
Molecular Weight	259.2176

Physical property

Density	1.45g/cm3
Melting point	195-200℃
Boiling point	456.5°C at 760 mmHg
Flash point	229.9°C
Refractive index	1.665

Hazard Symbols	Xi:Irritant;
Risk Codes	R36/38:;
Safety Description	S26:; S36:;