Carminic Acid (Natural dye) , 1260-17-9

Synonym(s):
Carminic acid (C.I. 75470);Natural Red 4

CAS NO.：1260-17-9

Empirical Formula: C22H20O13

Molecular Weight: 492.39

MDL number: MFCD00167028

EINECS: 215-023-3

PRODUCT Properties

• Melting point: 136 °C
• Boiling point: 506.2°C (rough estimate)
• alpha: 15654 +51.6° (water)
• Density: 1.4504 (rough estimate)
• bulk density: 490kg/m3
• refractive index: 1.6000 (estimate)
• Flash point: 12℃
• storage temp.: room temp
• solubility: 30g/l
• Colour Index: 75470
• pka: 1.62±0.20(Predicted)
• form: Crystalline Powder
• color: Red to dark red
• PH: 1.6 (10g/l, H2O, 20℃)
• Odor: Odorless
• PH Range: 4.8 - 6.2
• optical activity: [α]20/D +3.1°, c = 1 in H2O
• Water Solubility: 1.298g/L(room temperature)
• λmax: 495 nm
• ε(extinction coefficient): ≥13000 at 222-228 nm in ethanol at 0.03g/L; ≥18000 at 275-281nm in ethanol at 0.03g/L
• Merck: 14,1843
• BRN: 71651
• LogP: 1.532 (est)
• CAS DataBase Reference: 1260-17-9
• EPA Substance Registry System: C.I. Natural Red 4 (1260-17-9)

Description and Uses

Carminic acid (C.I. 75470) For staining nuclei in histological sections. Used to prepare staining solutions.
CAS 1260-17-9, pH 1.6 (10?g/l, H?O, 20?°C).

Safety

• Symbol(GHS): GHS05
• Signal word: Danger
• Hazard statements: H314
• Precautionary statements: P260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501
• Safety Statements: 22-24/25
• WGK Germany: 2
• HS Code: 32129000
• Hazardous Substances Data: 1260-17-9(Hazardous Substances Data)