Púrpura de Bromocresol 25 G

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 %

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