Calconcarboxylic acid, indicator for metal titration
- Synonyms: 2-Hydroxy-1-(2-hydroxy-4-sulpho-1-naphthylazo)-3-naphthoic acid
- C21H14N2O7S
- M = 438,42 g/mol
- CAS [3737-95-9]
- EINECS-No.: 223-117-0
- Solub. in water: (20 ºC): insoluble
- Melting point: 300 ºC
- Tariff number: 2927 00 00 90
- Applications: analytical chemistry, indicator, for the identification of: calcium.
SPECIFICATIONS
Absorption maximum l (in ethanol) : 569 - 572 nm
Absorptivity (A1%/1 cm; l1; pH 3,0 on dried sample): min. 250
water (K.F.): max. 10 %
suitability as indicator for metal titration : passes test
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AC06350005 |
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AC06350025 |
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