AURAMINE

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Product Short Description: Auramine O is Basic yellow 2 is a diarylmethane dye used as a fluorescent stain.
Product Technical Specification:

Specifications:

 

MOLECULAR FORMULA    C17H21N3·HCl 
MOLECULAR WEIGHT   303.83
COLOUR CRUDE YELLOW POWDER
DYE CONTENT 85 %
ABSORPTION MAXIMUM λ (ph 6.0) 431-433 nm
ABSORPTIVITY (A 1%/1cm λ MAX ph 6.0 ON DRIED MATERIAL  850-1000
SUITABILITY FOR MICROSCOPY PASSES TEST
LOSS ON DRYING AT 1100 C MAX 2 %
Remarks:

Handling and Storage
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Separate from incompatibilities. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.

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Litmus Granules / Powder

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Product Short Description: Litmus Granules / Powder
Product Technical Specification:
SPECIFICATIONS :
APPEARANCE : BLUE GRANULES
SENSITIVITY TEST : TO PASS TEST
SENSITIVITY TEST : TO PASS TEST SPECIFICATIONS :
APPEARANCE : BLUE GRANULES
SENSITIVITY TEST : TO PASS TEST 
Remarks:
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O - TOLIDINE

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Product Short Description: O - TOLIDINE
Product Technical Specification:

Specifications:

 

MOLECULAR FORMULA    C7H9N9 
MOLECULAR WEIGHT   107.16
SOLUBILITY (10MG/ML IN HCL 2%)     CLEAR
MELTING POINT           127-1340 C
SENSITIVITY           TO PASS TEST
Remarks:
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XYLIDINE PONCEAU 2R

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Product Short Description: XYLIDINE PONCEAU 2R
Product Technical Specification:
C.A.S. No. 3761-53-3
CI NO. 16150
M.F. C18H14N2Na2O7S2

Specifications:

Dye Content (by Spectrophotometry) >70%
Solubility 0.1% (Dist. water) Clear solution
Absorption maximum (in MeOH) ?max 507nm
Absorptivity (1%/ 1cm, at ? max) 420-600
Loss on drying (110°C) <5%
Remarks:
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p-XYLENOL BLUE

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Product Short Description: p-XYLENOL BLUE
Product Technical Specification:
C.A.S. No. 125-31-5
M.F. C23H22O5S
M.W. 410.49gm/mole

Specifications:

Dye Content (by Spectrophotometry) >90%
Solubility 0.1 % (MeOH) Clear solution
Transition range pH 8.0-9.6
  Yellow-Blue
Absorption maximum (in MeOH) ?max 424+/-5nm
Absorptivity (A1%/1cm, in MeOH) >200
Loss on drying (110°C) <3%
Remarks:
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TROPAEOLIN OO

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Product Short Description: TROPAEOLIN OO
Product Technical Specification:
C.A.S. No. 554-73-4
CI NO. 13080
M.F. C18H14N3SO3Na
M.W. 375.38gm/mole

Specifications:

Transition range pH 1.2-2.7
  Yellow-Orange
Absorption maximum (0.1N NaOH) ?max 447-451nm
Absorptivity (A1%/1cm in 0.1N NaOH, at ?max) >625
Loss on drying (110°C) <5%
Remarks:
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TRYPAN BLUE

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Product Short Description: TRYPAN BLUE
Product Technical Specification:
C.A.S. No. 72-57-1
CI NO. 23850
M.F. C34H24N6S4O14Na4
M.W. 960.82gm/mole

Specifications:

Dye Content (by Spectrophotometry) >60%
Solubility 0.1% (Dist. water) Clear solution
Absorption maximum (MeOH) ?max 603-607nm
Absorptivity (A1%/1cm in MeOH, at ? max) >625
Suitability for Microscopy Passes Test
Loss on drying (110°C) <10%
Remarks:
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WRIGHT STAIN

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Product Short Description: WRIGHT STAIN
Product Technical Specification:
C.A.S. No. 68988-92-1

Specifications:

Solubility 0.1 % (MeOH) Clear solution
Absorption Maximum (MeOH) ?1max 640-645nm
Absorption maximum (MeOH) ?2max 522-525nm
Absorptivity (A1%/1cm in MeOH at ?1max) >1100
Absorptivity (A1%/1cm in MeOH at ?2max) >650
Loss on drying (110°C) <10%
Remarks:
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XYLENOL ORANGE TETRASODIUM SALT ACS GRADE

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Product Short Description: Versatile indicator for acidic range, commonly used as an indicator for metal titrations.
Product Technical Specification:
C.A.S. No. 3618-43-7
M.F. C31H28N2SO13Na4
M.W. 760.59gm/mole

Specifications:

 

Solubility 0.1% (Dist. water) Clear solution
Absorption maximum (0.1N NaOH) ?max 575-580nm
Absorptivity (A1%/1cm in 0.1N NaOH, at ?max) >620
Loss on drying (110°C) <8%
Suitability for Zinc titration Passes test
Remarks:

XYLENOL used for metal titrations, it will appear red in the titrant and become yellow once it reaches its endpoint.

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THYMOLPHTHALEIN ACS GRADE

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Product Short Description: THYMOLPHTHALEIN ACS GRADE chemicals name is 3,3-Bis(4-hydroxy-5-isopropyl-2-methylphenyl)-2-benzofuran-1(3H)-one
Product Technical Specification:
C.A.S. No. 125-20-2
M.F. C28H30O4
M.W. 430.54gm/mole

Specifications:

Transition range pH 9.3-10.5
  Colorless-Blue
Solubility 0.1 % (95% EtOH) Clear solution
Absorption maximum (0.1N NaOH) ?max 592-596nm
Absorptivity (A1%/1cm at 0.1NNaOH, at ?max) >1000
Loss on drying (110°C) <1%
Remarks:

InChI Key : LDKDGDIWEUUXSH-UHFFFAOYSA-N

Thymolphthalein acts as pH indicator, as reagent for blood after decolorizing the alkaline solution by boiling with zinc dust. . Also used to model communicable disease transmission and the importance of lab cleanliness.Thymolphthalein was suitable as indicator during titration of hyamine hydroxide. It is suitable in preparing disappearing ink.

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