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Bromocresol Purple

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Bromocresol Purple

Synonyms
5',5''-Dibromo-o-cresolsulfonephthalein; BCP
CAS No.
115-40-2
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Description

Chemical Name

Bromocresol Purple

Synonyms

5',5''-Dibromo-o-cresolsulfonephthalein; BCP

CAS No.

115-40-2

Molecular formula

C21H16Br2O5S

EINECS No.

204-087-8

Molecular weight

540.22

Molecular Structure

Details

Appearance: Light yellow or light rose red crystalline powder

Maximal absorption wavelength:

λ1(PH5.2)               427~431

λ2 (PH6.8)               588~591

Absorption coefficient(L/cm·g):

α1(λ1PH5.2, dry sample)    40~45

α2 (λ2PH6.8, dry sample)  100.0~110.0  

Solubility in alkali: Passes test

Sulfated ash: 0.1%max

Loss on drying: 0.5%max

Solubility: solve in alcoholinsolve in water.

Packing: 25kg/ fibre drum

Main Application

Indicator

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