Pigments & Colorants
REACH
Lithol Rubine B
CAS Number
5858-81-1
EC Number
227-497-9
What is Lithol Rubine B?
Lithol Rubine B (CAS 5858-81-1), also known as D&C Red No. 6 and Pigment Red 57, is an azo-based organic pigment delivering a strong, bluish-red hue.
Where is Lithol Rubine B used?
- Personal care and cosmetics: D&C Red No. 6 for lipsticks, blushes and leave-on products
- Printing inks: Pigment Red 57 for offset and gravure packaging inks
- Plastics and polymers: uniform red coloration in films, molded parts and masterbatches
- Textile and paper producers use it as a surface colorant for bright red shading.
Good to know: Barium and calcium salt variants exist; confirm the specific salt form when sourcing. Cosmetic-grade material must meet specific purity requirements.
Commercial specifications
- Particle size and dispersion characteristics vary by grade
- Cosmetic-grade purity requirements
- Confirm barium or calcium salt form
Other Names (Synonyms)
D & c red no. 6|Pigment red 57|Lithol rubine|Disodium;2-[(3-carboxy-2-oxidonaphthalen-1-yl)diazenyl]-5-methylbenzenesulfonate
What are the physical properties of Lithol Rubine B?
Boiling Point 791.71°C[at 101 325 Pa]
Density 1.59[at 20℃]
Color Orange to Dark Red
Form Solid
Water Solubility 116g/L at 25℃
Vapor Pressure 0Pa at 25℃
Log P -1.9