CARMINIC ACID For Microscopy

C.I.No.75470 Used as a red colouring agent.
Natural Red 4

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Article No.
02550
Grade
For Microscopy
Purity
98%
CAS No.
1260-17-9
Molecular Formula
C22H20O13
Molecular Weight
492.40
H.S. Code
3203.0090
Shelf Life
60 Months
MSDS
 

 

Physical Properties

Physical state at 20 °C
Solid
Colour
Red
Odour
Odorless
pH value
4.8 - 6.2
Solubility in water [% weight]
Appreciable (> 10%)

Packings

  • 1CLVI00055

    1 g (00001)

  • 1GBA000015

    5 g (00005)

 

Specifications

Appearance Dark brownish red powder
Assay (acidimetric; on dried basis) Min 98%
Loss on drying (at 105°C) Max 7.0%
Suitability (for microscopy) Passes test
Absorption maxima at pH 3.0 490 - 495 nm
Specific absorptivity 1%/1cm (at λmax) Min 130

Safety Information and Hazard Symbols

Safety Statement: 22-24/25
Revision Date : 17-Apr-2014
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