Oranż metylowy czda (C.I. 13025) wskaźnik ExpertQ® do anzaliy, ACS, – Scharlau
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PRODUCENT: SCHARLAB
Methyl orange, C.I. 13025, indicator, Ex
– 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 – P321 – P330 – 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 %
