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BIOLOGICAL STAINS    |    LAB BEAGENTS    |    PH INDICATORS  
PH INDICATORS Total 7 pages,Current page2, Previous , Next  
[ IN-06 ] BROMO PHENOL BLUE                                                                                  CAS-No. 115-39-9
Chemical Formula C19H10Br4O5S
Molecular Weight 669.96
Transition Range pH3.0– pH4.6 greenish yellow to blue violet
Absorption rate of q uality ,L/cm.g ≥ 115
Solution clarity ( Ethanol ) Pass
Sulfated ash ≤ 0.25%
[IN-07] BROMO PHENOL BLUE SODIUM SALT                                                     CAS-No. 34725-61-6
Chemical Formula C19H9Br4NaO5S
Molecular Weight 691.94
Transition Range pH3.0– pH4.6 greenish yellow to blue violet
Appearance of solution Conforms
Absorption maximum 590-594 nm
Sulfated ash 19-21 %
Loss on drying ≤ 5%
[IN-08] BROMOTHYMOL BLUE                                                                                         CAS-No. 76-59-5
Chemical Formula C27H28Br2O5S
Molecular Weight 624.40
Transition Range pH6.0– pH 7.6 yellow to blue
Absorption rate of quality, L/cm.g ≥ 52.0
Solution Cl arity (Ethanol) Pass
Sulfated ash ≤ 0.3%
[IN-09] BROMOTHYMOL BLUE SODIUM SALT                                                       CAS-No. 34722-90-2
Chemical Formula C27H27Br2NaO5S
Molecular Weight 646.37
Transition Range pH6.0– pH7.6 yellow to blue
Appearance of solution Conforms
Sulfated ash ≤ 5 %
[ IN-10 ] CATECHOL VIOLET
Chemical Formula C19H14O7S
Molecular Weight 386.38
Sensitivity test Conforms
Suitability for bismuth determination Conforms
Solution clarity(water) Conforms
Sulfated ash ≤ 0.4%
[ IN-11 ] CALCONCARBOXYLIC ACID                                                                         CAS-No.3737-95-9
Chemical Formula C21H14N2O7S
Molecular Weight 438.42
Complex Conforms
Titration test Conforms
Solution clarity Conforms
Sulfated ash ≤ 0.3%
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