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Carminic acid, 5 g
Key Features and Details
SYNONYMS: C.I. 75470; Natural Red 4; 7-a-D-Glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl- 9,10-dioxo-2- anthracenecarboxylic acid
CAS: #
1260-17-9
MOLECULAR FORMULA: C
22
H
20
O
13
MOLECULAR WEIGHT: 492.4
BEILSTEIN REGISTRY No.: 71651
EC No: 215-023-3
MDL No: MFCD00167028
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PRODUCT DESCRIPTION
Carminic acid is aglucosidal coloring matter. The essential constituent of carmine. A pH indicator.
Application Notes
Typical Uses:
1. Free acid in color photography
2. Pigment for artists' paints
3. As bacteriology stain
4. Rarely now as acid-base indicator or as oxidimetric indicator
5. As a reagent for aluminum
6. As a complexing agent for cations.
Usage Statement
Unless specified otherwise, MP Biomedical's products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department.
Key Applications
Bacteriology stain | Reagent for aluminum
SPECIFICATIONS
SKU: 0215494205
Base Catalog Number: 15494205
Alternate Names: C.I. 75470; Natural Red 4; 7-a-D-Glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl- 9,10-dioxo-2- anthracenecarboxylic acid
Beilstein Registration No
: 71651
CAS
: #
1260-17-9
EC No
: 215-023-3
MDL No
: MFCD00167028
Molecular Formula
: C
22
H
20
O
13
Molecular Weight
: 492.4
Optical Rotation: [a]20/D +3.1°, c = 1 in H2O (Lit.)
pH
: Visual Transition Inverval: 4.8 (yellow to violet) to 6.2 (deep red)
PPE
: Eyeshields, Gloves, respirator filter
Solubility
: Soluble in water (4 mg/mL), ethanol (2 mg/mL), methanol or in 1N NaOH (1:1).
UV Visible Absorbance
: ? max (water) 490 - 491 nm
