Bromocresol Purple (Reag. USP) for analysis

Melting Point:

240 °C

Solubility:

water 20 g/l at 20 °C
alcohol 80 g/l

Physical Description:

solid

Product Code:

121546

Product Name:

Bromocresol Purple (Reag. USP) for analysis

Quality Name:

for analysis

Headline Comment:

pH indicator 5,2 greenish yellow; 6,8 bluish purple

Specifications:

Identity: IR passes test
A 1% , 1 cm, λ max. 1 (calc. a.d.s.): >400
A 1% , 1 cm, λ max. 2 (calc. a.d.s.): >950
λ of max. ABS: 588 - 590 nm
λ of max. ABS: 427 - 433 nm
T.L.C.: passes test

Maximum limit of impurities
pH transition interval: greenish yellow: 5.2
pH transition interval: bluish purple: 6.8
Insoluble matter in C2H5OH: passes test
Loss on drying at 110°C: 1%
Residue on ignition (as SO4): 0.5 %

WGK:

2

Storage:

Storage between +2 and +8°C .

Master Name:

Bromocresol Purple

Synonyms Long Text:

5',5''-Dibromo-o-Cresolsulphonephthalein

EINECS:

204-087-8

CS:

2934 99 90 90

Download TDS file for complete specifications