C21H14Br4O5S

Molecular Weight:
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Bromocresol green
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Product: Views:110Bromocresol green 
Unit price: Negotiable
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Valid until: Long-term effective
Last updated: 2017-08-21 18:34
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Product name: Bromocresol green
CAS NO.: 76-60-8
Molecular formula:

C21H14Br4O5S
Molecular Weight: 698.02
Properties:

White or pale grey crystal,easy solve in alcohol,aether and benzene,decline solve in water.
Specification (Q/SS•J02•144-2006)
Items: Ind Grade
PHchangerange    3.8(yellow green )-5.4(blue)
Solubllity in alcohol Passes test 
Sulfated ash, percent  ≤0.25    
Maximal absorption wavelength(nm)  λ1(PH3.8)      440-445
λ2(PH5.4)      615-618
Loss on drying w,percent ≤3.0
Quality absorpting coefficient (L/cm•g) α1[λ1(PH3.8,dry sample)]   24-28
α2[λ2(PH5.4,dry sample)]   53-58
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