Sudan Ⅳ
CAS: 85-83-6
Molecular Formula: C24H20N4O
Molecular Weight: 380.44
Product description:Dark brown powder, no smell; At 175 ℃ softening lump in 181 ~ 188 ℃ melting decomposition, decomposition of all 260 ℃; 1 g soluble in 15 ml chloroform, soluble in benzene, soluble in oil, fat, paraffin oil, phenol, slightly soluble in ethanol and acetone, almost insoluble in water; Is slightly purple solution in alcohol or benzene, alcohol solution of sodium hydroxide show red purple, sulfuric acid in turquoise, dilution is generated red precipitate; Maximum absorption wavelength of 520 nm (357).Dyeing biological stain, such as oil and fat, fat can be dyed red.
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