1-((4-Methyl-2-nitrophenyl)diazenyl)naphthalen-2-ol , 97% , 2425-85-6

Synonym(s):
Pigment Red 3

CAS NO.：2425-85-6

Empirical Formula: C17H13N3O3

Molecular Weight: 307.3

MDL number: MFCD00003910

EINECS: 219-372-2

PRODUCT Properties

• Melting point: 270-272 °C(lit.)
• Boiling point: 447.81°C (rough estimate)
• Density: 1.1873 (rough estimate)
• refractive index: 1.6500 (estimate)
• solubility: Chloroform (Slightly, Heated), DMSO (Slightly), Toluene (Very Slightly)
• Colour Index: 12120
• pka: 13.45±0.50(Predicted)
• Water Solubility: 211μg/L at 20℃
• Stability: Stable. May be moisture sensitive. Incompatible with strong oxidizing agents.
• LogP: 5.4 at 25℃
• CAS DataBase Reference: 2425-85-6(CAS DataBase Reference)
• IARC: 3 (Vol. 57) 1993
• NIST Chemistry Reference: 2-Naphthalenol, 1-[(4-methyl-2-nitrophenyl)azo]-(2425-85-6)
• EPA Substance Registry System: C.I. Pigment Red 3 (2425-85-6)

Description and Uses

C.I. Pigment Red 3, 12120 [2425-85-6] is a good representative of monoazopigments of the β-naphthol type and is one of the most important organic pigments.

Toluidine Red is a oil soluble dye. Toluidine Red has been shown to cause hematopoietic cell proliferation in the spleen, liver, and bone marrow of rats. Dyes and metabolites, Environmental Testing

Safety

• Symbol(GHS): GHS05,GHS09
• Signal word: Danger
• Hazard statements: H318-H410
• Precautionary statements: P273-P280-P305+P351+P338-P501
• Hazard Codes: Xi,N
• Risk Statements: 41-50/53
• Safety Statements: 26-39-60-61
• RIDADR: UN 3077 9/PG 3
• WGK Germany: 3
• RTECS: QK4247000
• Hazardous Substances Data: 2425-85-6(Hazardous Substances Data)