产品

- Synonyms: Helianthine, 4-Dimethylaminoazobenzene-4’-sulfonic acid sodium salt, Gold orange
- C14H14N3NaO3S
- M = 327,34 g/mol
- CAS [547-58-0]
- EINECS-No.: 208-925-3
- Solub. in water: (20 ºC): ~ 5 g/l
- LD 50 (oral, rat): 60 mg/kg
- ADR: 6.1 T2 III UN 2811
- IMDG: 6.1 III UN 2811
- IATA/ICAO: 6.1 III UN 2811
- GHS-signal word: Danger
- GHS-H sentences: H301
- GHS-P sentences: P264 - P270 - P301+P310 - P321 - P405 - P501a
- Tariff number: 2927 00 00 90
- Applications: indicator, analytical chemistry, laboratory reagent (alkali salts), manufacture of dyes (in the textile industry).
- Appearance: Orange crystalline powder

SPECIFICATIONS
appearance of solution: passes test
pH range (pink to orange-yellow) : 3,2 - 4,4
visual transition interval: passes test
Absorption maximum l2 (pH 4,4) : 467 - 471 nm
Absorption maximum l1 (pH 3,1) : 501 - 504 nm
Absorptivity (A1%/1 cm; l1; pH 3,1 on dried sample): 1050 - 1150
Absorptivity (A1%/1 cm; l2; pH 4,4 on dried sample): 750 - 850
loss on drying (110 ºC): max. 5 %