 |
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 |
| Producer, Manufacturer,
Supplier of |
| Congo Red |
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 |
| GRR
Code : |
0560 |
|
| CAS No : |
573-58-0 |
| CI No : |
22120 |
| Molecular Formula
: |
C32H22N6Na2O6S2 |
| Molecular Weight
: |
696.66 |
| Description
: |
Dark brownish red powder · Solubility in water at 25 ° C 40 g/l . In alcohol 1 g/l ·
APPLICATIONS: Analytical reagent: RFE · USP 25 · BP · Ph. Eur. IV · pH indicator: 3,0 - 5,2 blue-violet - red-orange · Biological methods and bibliography |
| Website : |
|
| Synonyms : |
Diphenyldiazo-bis-a -Naphthylaminosulphonic Acid Sodium Salt, Direct Red 28, C.I. 22120 |
| Specifications
: |
| Specifications |
|
| Identity |
IR p/t |
| l1 of max. ABS at pH 3,0 |
563-568 nm |
| l2 of max. ABS at pH 5,2 |
484-490 nm |
| A 1%, 1cm, l1 max. (calc. a.d.s.) |
>150 |
| A 1%, 1cm, l2 max. (calc. a.d.s.) |
>200 |
| T.L.C |
p/t. |
MAXIMUM LIMIT OF IMPURITIES |
|
| pH transition interval: |
|
| blue violet |
3,0 |
| red orange |
5,2 |
| Loss on drying at 110°C |
5 % |
HAZARDOUS: E.C.: 611-027-00-8 · RTECS: QK 1400000 ·
 |
R: 45-63
S: 53-45 |
TRANSPORT REGULATIONS: UN: 2811 · ADR: 6.1/III · IMDG: 6.1/III · IATA: 6.1/III · PAX: 619 · CAO: 619 |
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| GRR
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