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| Producer, Manufacturer,
Supplier of |
| Rosolic Acid |
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| GRR
Code : |
0089 |
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| CAS No : |
603-45-2 |
| CI No : |
43800 |
| Molecular Formula
: |
C19H14O3 |
| Molecular Weight
: |
290.32 |
| Description
: |
pH indicator 6,8 yellow; 8,0 red
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| Website : |
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| Synonyms : |
p-Rosolic Acid, Aurine, CI-43800, 4-[Bis(4-Hydroxyphenyl)methylene]-2,5-Cyclohexadien-1-one, C19H14O3, yellow corallin |
| Specifications
: |
| Specifications |
|
PHYSICAL DATA: Red powder · Solubility in water at 20 ºC 9 g/l . In alcohol 60 g/l
APPLICATIONS: pH indicator: 6,8-8,0 yellow-red | Identity IR p/t.
l of max. ABS in NaOH 0,1 mol/l 524-528 nm
A 1%, 1 cm, lmax >1250
T.L.C p/t.
MAXIMUM LIMIT OF IMPURITIES
Insoluble matter in C2H5OH p/t.
Loss on drying at 135°C 5 %
Residue on ignition (as SO4) 0,5 %
Cu 0,005 %
Fe 0,005 %
Ni 0,005 %
Pb 0,005 % |
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| GRR
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