Methyl red, sodium salt, C.I. 13020, indicator, soluble in water, 2-[(4-Dimethylamino)phenylazo]benzoic acid sodium salt

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CAS: 845-10-3

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x 100 g :: Glass bottle	RO01550100	In stock	Buy

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x 10 g :: Glass bottle	RO01550010	Check stock	Buy
x 25 g :: Glass bottle	RO01550025	Check stock	Buy

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Characteristic
Volume : x 100 g

- Synonyms: 2-[(4-Dimethylamino)phenylazo]benzoic acid sodium salt
- C15H14N3NaO2
- M = 291,29 g/mol
- CAS [845-10-3]
- EINECS-No.: 212-682-9
- Solub. in water: (20 ºC): ~ 800 g/l
- Tariff number: 2927 00 00 90
- Applications: analytical chemistry, indicator.

SPECIFICATIONS

brownish - yellow ): 4,5 - 6,2
Absorption maximum l1 (pH 4,5): 523 - 526 nm
Absorption maximum l2 (pH 6,2): 430 - 438 nm
Absorptivity (A1%/1 cm; l1; pH 4,5 on dried sample): 1200 - 1400
Absorptivity (A1%/1 cm; l2; pH 6,2 on dried sample): 600 - 700
transition range acc. ACS: passes test
loss on drying (110 ºC): max. 5 %