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Bromocresol green

Bromocresol green

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Synonyms:
3',3'',5',5''-Tetrabromo-m-cresolsulfonephthalein; BCG
CAS No.:
76-60-8
数量
-
+
库存:
0
0
1
keyword:
Bromocresol green
Description
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Chemical Name

Bromocresol green

Synonyms

3',3'',5',5''-Tetrabromo-m-cresolsulfonephthalein; BCG

Molecular formula

C21H14Br4O5S

CAS No.

76-60-8

EINECS No.

200-972-8

Molecular weight

698.02

Molecular Structure

Details

Appearance: White or pale grey crystal

PH change range: 3.8(yellow green)-5.4(blue)

Maximal absorption wavelength (nm):

λ1 (PH3.8)      440-445           

λ2 (PH5.4)      615-618

Quality absorpting coefficient (L/cm·g):

α1 [λ1(PH3.8,dry sample)]   24-28       

α2 [λ2(PH5.4,dry sample)]   53-58

Solubility in alcohol: Passes test

Ignition residue (sulfate): 0.25%max

Loss on drying: 3.0%max

Solubility: easy solve in alcohol, aether and benzene, decline solve in water.

Packing: 25kg/fibre drum

Main Application

Used as acid and alkali indicators, cell dye.

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