C.I. Natural Red 4
[CAS# 1260-17-9]

Identification

• Classification: Biochemical >> Carbohydrate >> Monosaccharide
• Name: C.I. Natural Red 4
• Synonyms: 7-beta-D-Glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-2-anthracenecarboxylic acid; C.I. 75470; C.I. Natural Red 4; Carmine 5297; Cochineal Red PWD; E 120; E 120 (dye); NSC 326224; Natural Red 2180; Natural Red 4; San Red 1; San-Ei Gen San Red 1; Sun Red 1; Sun Red No. 1
• Molecular Formula: C₂₂H₂₀O₁₃
• Molecular Weight: 492.39
• CAS Registry Number: 1260-17-9
• EC Number: 215-023-3

Properties

• Solubility: Insoluble (3.5E^-3 g/L) (25 °C), Calc.^*
• Density: 1.869±0.06 g/cm³ (20 °C 760 Torr), Calc.^*
• Melting point: 136 °C (decomp)^**

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2017 ACD/Labs)

^** "Hazardous Substances Data Bank" data were obtained from the National Library of Medicine (US)

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin corrosion	Skin Corr.	1B	H314