Packs sizes (1)
Technical data
- Melting Point:
- 179 °C
- Solubility:
- water 0.1 g/l at 20 °C
alcohol 2 g/l
- Physical Description:
- solid
- Product Code:
- 131617
- Product Name:
- Methyl Red (C.I. 13020)(Reag. USP, Ph. Eur.) for analysis, ACS
- Quality Name:
- for analysis, ACS
- Headline Comment:
- pH indicator 4,2 red; 6,2 yellow
- Specifications:
- Identity: IR passes test
A 1% , 1 cm, λ 1 max. (calc. a.d.s.): >1500
A 1% , 1 cm, λ 2 max. (calc. a.d.s.): >670
A 1% , 1 cm, λ 3 max.: >750
λ of max. ABS: 525 - 528 nm
λ of max. ABS: 430 - 434 nm
λ of max. ABS in C2H5OH: 490 - 495 nm
Melting range: 179-182°C
Range of Transition interval according to ACS: passes test
T.L.C.: passes test
Maximum limit of impurities
pH transition interval: red: 4.2
pH transition interval: yellow: 6.2
Insoluble matter in C2H5OH: passes test
Loss on drying at 110°C: 5%
Residue on ignition (as SO4): 2 %
- WGK:
- 2
- Storage:
- Room Temperature.
- Master Name:
- Methyl Red *(C.I. 13020)
- Synonyms Long Text:
- 2-[4-(Dimethylamino)Phenylazo]Benzoic Acid, AcidRed 2
- EINECS:
- 207-776-1
- CS:
- 2927 00 00 90
