Nero eriocromo T, C.I. 14645, indicatore per la titolazione dei metalli

- Synonyms: Chrome black T, 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-6-nitronaphthalene-4-sulfonic acid sodium salt
- C20H12N3NaO7S
- M = 461,38 g/mol
- CAS [1787-61-7]
- EINECS-No.: 217-250-3
- Solub. in water: (20 ºC): 50 g/l
- LD 50 (oral, rat): 17590 mg/kg
- ADR: 9 M7 III UN 3077
- IMDG: 9 III UN 3077
- IATA/ICAO: 9 III UN 3077
- GHS-signal word: Warning
- GHS-H sentences: H319 - H411
- GHS-P sentences: P280 - P273 - P264 - P305+P351+P338 - P337+P313 - P501a
- Tariff number: 3204 19 00 90
- Applications: analytical chemistry, indicator (metals), indicator of the hardness of water.

SPECIFICATIONS
Absorption maximum l (pH + 10,0): 619 - 624 nm
Absorptivity (A 1 %/1 cm; l max; pH 10,0; on dried sample): 270 - 370
suitability as metal indicator: passes test
loss on drying : max. 7 %