NAPHTHOL GREEN B

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Product Short Description: NAPHTHOL GREEN B
Product Technical Specification:
C.A.S. No. 19381-50-1
CI NO. 10020
M.F. (C10H5O5NNaS)3 . Fe
M.W. 878.45gm/mole

Specifications:

 

Solubility 0.1 % (Dist. water) Clear solution
Absorption maximum (Dist. water) ?max 712-716nm
Absorptivity maximum (A1%/1cm, in water on dried substance) at ?max >110
Loss On Drying (110°C) <10%
Remarks:
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METHYLTHYMOL BLUE COMPLEXONE

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Product Short Description: METHYLTHYMOL BLUE COMPLEXONE
Product Technical Specification:
C.A.S. No. 1945-77-3
M.F. C37H40N2Na4O13S
M.W. 844.76gm/mole

Specifications:

Solubility 0.1 % (Dist. water) Clear solution
Absorption maximum (Dist. water) ?max 437-443nm
Absorptivity maximum (A1%/1cm, in water, at ?max) >120
Loss On Drying (110°C) <10%
Suitability as indicator for Metal Titration Passes test
Remarks:
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METHYL RED SODIUM SALT ACS GRADE

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Product Short Description: METHYL RED SODIUM SALT (ACS GRADE)
Product Technical Specification:
C.A.S. No. 845-10-3
CI NO. 13020
M.F. C15H14N3O2Na
M.W. 291.29gm/mole

Specifications:

Dye Content (by Spectrophotometry) >90%
Solubility 0.1%(Dist. water) Clear solution
Transition Range pH 4.5-6.2
  Violet red- Brownish Yellow
Absorption maximum (Dist. water) ?max 430-440nm
Absorptivity (A1%/1cm in Dist. water) at ?max >580
Loss On Drying (110°C) <5%
Remarks:
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METHYL RED HYDROCHLORIDE

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Product Short Description: METHYL RED HYDROCHLORIDE
Product Technical Specification:
C.A.S. No. 63451-28-5
CI NO. 13020
M.F. C15H16N3O2Cl
M.W. 305.77gm/mole

Specifications:

Dye Content (by Spectrophotometry) >90%
Solubility 0.1%(95% EtOH) Clear solution
Transition Range pH 4.2-6.2
  Pink-Yellow
Absorption maximum (EtOH) ?max 490-496nm
Absorptivity (A1%/1cm in Ethanol) at ?max >550
Loss On Drying (110°C) <3%
Remarks:
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METHYL ORANGE ACS GRADE

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Product Short Description: METHYL ORANGE (ACS GRADE)
Product Technical Specification:
C.A.S. No. 547-58-0
CI NO. 13025
M.F. C14H14N3SO3Na
M.W. 327.34gm/mole

Specifications:

Dye Content (by Spectrophotometry) >95%
Solubility 0.1 % (Dist. water) Clear solution
Transition Range pH 3.1-4.4
  Pink Orange-Yellow
Absorption maximum (pH 3.1) ?1max 501-504nm
Absorption maximum (pH 4.4) ?2max 467-471nm
Absorptivity (A1%/1cm at pH 3.1 at ?1max) 1050-1150
Absorptivity (A1%/1cm at pH 4.4 at ?2max) 750-850
Loss On Drying (110°C) <3%
Remarks:
Colour change 
The color change of a pH indicator is caused by the dissociation of the H+ ion from the indicator itself. Recall that pH indicators are not only natural dyes but also weak acids. The dissociation of the weak acid indicator causes the solution to change color.
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MAY-GRUNWALD STAIN

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Product Short Description: MAY-GRUNWALD STAIN
Product Technical Specification:

 

C.A.S. No. 62851-42-7

Specifications:

APPEARANCE  BLACKISH GREEN POWDER
Solubility 0.1 % (MeOH) CLEAR BLUE SOLUTION WITH GREEN FLUORESCENCE 
Absorption Maximum(in MeOH) ?1max 650-653nm
Absorption Maximum(in MeOH) ?2max 520-525nm
Absorptivity (A1%1cm in MeOH at ?1max on dried substance) >1100
Absorptivity (A1%1cm in MeOH at ?2max on dried substance) >600
Loss On Drying (110°C) <10%
Suitability for microscopy Passes test
Remarks:
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JENNER STAIN

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Product Short Description: JENNER STAIN
Product Technical Specification:
C.A.S. No. 62851-42-7

Specifications:

Solubility 0.1 % (MeOH) Clear solution
Absorption Maximum(in MeOH) ?1max 650-653nm
Absorption Maximum(in MeOH) ?2max 520-525nm
Absorptivity (A1%1cm in MeOH at ?1max on dried substance) >1100
Absorptivity (A1%1cm in MeOH at ?2max on dried substance) >600
Loss On Drying (110°C) <10%
Remarks:
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HYDROXY NAPHTHOL BLUE ACS GRADE

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Product Short Description: HYDROXY NAPHTHOL BLUE (ACS GRADE)
Product Technical Specification:
C.A.S. No. 165660-27-5
M.F. C20H12N2O11Na2S3
M.W. 598.50gm/mole

Specifications:

Solubility 0.1 % (Dist. Water) Clear solution
Suitability for Calcium determination Passes test
Absorption maximum (Ammonia buffer pH 12.0+2ml 0.05M E.D.T.A.) ?max 645-650nm
Absorptivity (A1% 1cm at ?max, in Ammonia buffer pH 12.0+2ml 0.05M E.D.T.A.) >350
Loss On Drying (110°C) <5%
Remarks:
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EVAN'S BLUE

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Product Short Description: EVAN'S BLUE
Product Technical Specification:
C.A.S. No. 314-13-6
CI NO. 23680
M.F. C34H24N6Na4O14S4
M.W. 960.82gm/mole

Specifications:

Dye Content (by Spectrophotometry) >85%
Solubility 0.1 % (Dist. Water) Clear solution
Absorption maximum (Dist. water) ?max 605-611nm
Absorptivity (A1% 1cm in water, at ?max, on dried substance) >800
Loss On Drying (110°C) <10%
Suitability for microscopy Passes test
Remarks:
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ETHYL ORANGE

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Product Short Description: ETHYL ORANGE
Product Technical Specification:
C.A.S. No. 62758-12-7
M.F. C16H18N3SO3Na
M.W. 355.39gm/mole

Specifications:

Solubility 0.1 % (Dist. Water) Clear solution
Transition Range pH 3.0-4.8
  Red-Orange Yellow
Absorption maximum (Dist. Water) ?max 472-477nm
Absorptivity (A1% 1cm in Dist. water, at ?max) >850
Loss On Drying (110°C) <5%
Remarks:
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