Solvent black 3

Synonyms: Sudan Black B
2, 3-Dihydro-2, 2-dimethyl-6-[[4-(phenylazo)-1-naphthyl]azo]perimidine
Solvent black 4B
Transparent black 4B
Transparent black B
Oil black 3
Oil black 4B
Foreign relative brand:
Sudan Black B(PYL)
Rosaplast Black OBB(ROSE)
Neptun Black X60 (BASF)
Neoplas Black HB (SIC)


1. Product Name
Trade Name: Solvent black 4B
C. I. No.: 26150/Solvent black 3
Molecular Formula: C29H24N6
Molecular Weight: 456.54
CAS. No.: 4197-25-5
EINECS No.: 224-087-1
Chemical Family: Disazo

2. Physical, Chemical and Fastness Properties
Light: 4-5
Melting point: 120-124ºC
Stability: Good
Water: Insoluble
Soluble in alcohol, toluene, acetone.
Soda(5%): Unaffected
Hydrochloric acid(5%): Unaffected

3. Application:
Shade: Bluish black powder
Main application: The product is used in coloring of plastics, candles, printing ink and writing ink, etc.