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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LEISHMAN STAIN

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Product Short Description: LEISHMAN STAIN
Product Technical Specification:
C.A.S. No. 12627-53-1

Specifications:

APPEARANCE  BLACKISH BLUE POWDER
Solubility 0.1 % (MeOH) CLEAR BLUE SOLUTION WITH GREEN FLUORESCENCE
Absorption Maximum(in MeOH) ?1max 640-645nm
Absorption Maximum(in MeOH) ?2max 522-525nm
Absorptivity (A1%1cm in MeOH at ?1max on dried substance) >900
Absorptivity (A1%1cm in MeOH at ?2max on dried substance) >650
Loss On Drying (110°C) <8%
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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GIEMSA STAIN

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Product Short Description: GIEMSA STAIN APPLICATION: MICROSCOPICAL STAINING
Product Technical Specification:
C.A.S. No. 51811-82-6

Specifications:

Appearance Greenish Powder
Solubility 0.1 % (MeOH) Clear Blue Solution with Fluorescence
Absorption Maximum(in MeOH) ?1max 640-650 nm
Absorption Maximum(in MeOH) ?2max 520 - 525 nm
Absorptivity (A1%1cm in MeOH at ?1max on dried substance) 950-1150
Absorptivity (A1%1cm in MeOH at ?2max on dried substance) 600-750
Loss On Drying (110°C) <10%
Suitability for microscopy Passes test
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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EOSIN YELLOW

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Product Short Description: EOSIN YELLOW
Product Technical Specification:
C.A.S. No. 17372-87-1
CI NO. 45380
M.F. C20H6Br4Na2O5
M.W. 691.86gm/mole

Specifications:

Appreance RED/ORANGE POWDER 
Dye Content (Spectrophotometry) >90%
Solubility 0.1 % (Dist. Water) Clear solution
Absorption Maximum (Dist. water) ?max 515-518nm
Absorptivity (A1%,1cm in water at ?max) >1260
Loss On Drying (110°C) <8%
Suitability for microscopy Passes test
Remarks:
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EOSIN BLUE

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Product Short Description: EOSIN BLUE
Product Technical Specification:
C.A.S. No. 548-24-3
CI NO. 45400
M.F. C20H6Br2N2Na2O9
M.W. 624.09gm/mole

Specifications:

Dye content (By Gravimetry) >85%
Solubility 0.1 % (Dist. Water) Clear solution
Absorption maximum (Dist. water) ?max 516-520nm
Absorptivity (A1%1cm in water at ?max) >800
Loss On Drying (110°C) <8%
Remarks:
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