Carminic Acid (Natural Dye)
Synonym: Natural Red 4
Linear Formula:
C22H20O13
Molecular Weight: 492.39g/mol
CAS Number: 1260-17-9
Properties
| Vapour pressure | 0mmHg at 25℃ |
| Water Solubility | Soluble |
| Refractive index | 1.792 |
| B pt. | 907.6℃at 760 mmHg |
| M pt. | 136 ℃ |
| Density | 1.869 g/cm3 |
Safety Information
| Symbol | |
| Flash point | 316.1℃ |
| Storage Temp. | Store at Room temperature. |
| Packaging | Glass bottle |
Description
Purpose
For R&D use onlynot for drug household or other uses.
General Description
Carminic acid (C22H20O13) is a red glucosidal hydroxyanthrapurin that occurs naturally in some scale insects such as the cochineal Armenian cochineal and Polish cochineal. The insects produce the acid as a deterrent to predators. Carminic acid is the colouring agent in carmine. Synonyms are C.I. 75470 and C.I. Natural Red 4.
Documents
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