PAN Indicator

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Product Short Description: 1-(2-Pyridylazo)-2-Naphthol
Product Technical Specification:
The optimised PAN indicator contains:
Component Quantity
PAN 0.1 g
methanol 40.0 ml
n-propanol 40.0 ml
mono-ethylene glycol 10.0 ml
distilled or deionised water 10.0 ml

To make the indicator:
1. It is strongly recommended that preparation of the indicator is carried out in a fume cupboard.
2. Place the methanol in a suitable container, add the PAN and stir.
3. Dissolution of the PAN can take some time. Dissolution can be accelerated by warming gently. Avoid excessive heat because the flash point of methanol is only 11 °C. Ensure that there are no ignition sources when warming or preparing solutions.
4. When fully dissolved, allow to cool.
5. Then add the n-propanol, mono-ethylene glycol and water. Mix thoroughly by stirring.
6. Store in tightly closed container.
Note: that this indicator formulation contains organic solvents and, consequently, may have to be stored in fire resistant cupboards according to type and size of container.
The shelf life of the indicator is anticipated to be at least one year if it is stored correctly. Since only small quantities are required for assessments, it is recommended that no more than 200 ml of indicator is made at any one time. 
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Methylene Blue AR

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Product Short Description: Methylene Blue is Lab Reagent acid-base indicator
Product Technical Specification:

Synonyms : Tetramethylthionine chloride

3,7-bis(Dimethylamino)phenazathionium chloride
Basic Blue 9
Formula : C16H18ClN3S.xH2O
Molecular weight : 319,85 g/mol
CAS-No. : 122965-43-9
EC-No. : 200-515-2

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Brilliant Yellow AR

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Product Short Description: Formula : C26H18N4Na2O8S2
Product Technical Specification:
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CRYSTAL VIOLET

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Product Short Description: Gentian violet
Product Technical Specification:
 
MOLECULAR FORMULA    C25H30N3Cl 
MOLECULAR WEIGHT   408.0
CAS NO.  548-62-9

 

 

DESCRIPTION GREEN SHINY CRYSTALS
WATER CONTENT MAX 7. 5%
RESIDUE ON IGNITION MAX 1. 5%
ALCOHOL INSOLUBLE SUBSTANCES MAX 1%
ARSENIC MAX 0. 001%
LEAD ( Pb) MAX 0. 003%
ZINC ( Zn ) MAX 0. 001%
ASSAY  96 TO 100. 5% 

MOLECULAR FORMULA    C7H9N9 
MOLECULAR WEIGHT   107.16
SOLUBILITY (10MG/ML IN HCL 2%)     CLEAR
MELTING POINT           127-1340 C
SENSITIVITY           TO PASS TEST 
MOLECULAR FORMULA    C7H9N9 
MOLECULAR WEIGHT   107.16
SOLUBILITY (10MG/ML IN HCL 2%)     CLEAR
MELTING POINT           127-1340 C
SENSITIVITY           TO PASS TEST 
SENSITIVITY TEST : TO PASS TEST SPECIFICATIONS :
APPEARANCE : BLUE GRANULES
SENSITIVITY TEST : TO PASS TEST 
MOLECULAR FORMULA    C25H30N3Cl 
MOLECULAR WEIGHT   408.0
CAS NO.  548-62-9
DESCRIPTION GREEN SHINY CRYSTALS
WATER CONTENT  MAX 7. 5%
RESIDUE ON IGNITION MAX 1. 5%
ALCOHOL INSOLUBLE SUBSTANCES MAX 1%
ARSENIC MAX 0. 001%
LEAD ( Pb) MAX 0. 003%
ZINC ( Zn ) MAX 0. 001%
ASSAY  96 TO 100. 5% 

 

MOLECULAR FORMULA    C7H9N9 
MOLECULAR WEIGHT   107.16
SOLUBILITY (10MG/ML IN HCL 2%)     CLEAR
MELTING POINT           127-1340 C
SENSITIVITY           TO PASS TEST 
MOLECULAR FORMULA    C7H9N9 
MOLECULAR WEIGHT   107.16
SOLUBILITY (10MG/ML IN HCL 2%)     CLEAR
MELTING POINT           127-1340 C
SENSITIVITY           TO PASS TEST 
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Metanil Yellow

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Product Short Description: ACID YELLOW 36
Product Technical Specification:
C.A.S. No.  587-98-4
CI NO. 13065
M.F. C18H14N3O3SNa
M.W. 375.391 gm/mole

Specifications Acid yellow 36:

 

Solubility 0.1% (Dist. Water) Clear solution
Absorptivity (A1%, 1cm in Water, at ?max 530.0nm >650
Loss On Drying (110°C) Moisture >5%
Remarks:

Metanil Yellow which is also called Acid yellow 36 is used in printing on paper, dyeing on fibres, silk, Wool, nylon, silk, paper, ink, aluminum, detergent, wood, fur, cosmetics, biological stain etc.

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1,3 DibromoPropane

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Product Short Description: 1,3-Dibromopropane is a halogenated hydrocarbon. When at room temperature, it is a colorless to light-brown liquid with sweet odor.
Product Technical Specification:

1,3-Dibromopropane Properties

Melting point:−34 °C(lit.)
Boiling point:167 °C(lit.)
Density 1.989 g/mL at 25 °C(lit.)
vapor density 7 (vs air)
refractive index n20/D 1.524(lit.)
Flash point:54 °Cstorage temp. 2-8°Csolubility 1.68g/lform Liquidcolor Clear colorless to yellowWater Solubility 1.7 g/L (30 ºC)Merck 14,9713Stability:Stable. Incompatible with strong oxidizing agents, strong bases. Flammable

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Field's Stain B

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Product Short Description: Field's Stain B
Product Technical Specification:

 

Appearance Pinkish Red  Powder
Absorption maximum 529nm
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Field's Stain A

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Product Short Description: Field's Stain A
Product Technical Specification:

 

Appearance Drak green to drak blue crystalline powder
Absorption maximum 650nm
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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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INDIGO CARMINE

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Product Short Description: INDIGO CARMINE
Product Technical Specification:

Specifications:

 

DYE CONTENT Min 80%
ABSORPTION MAX 608-612 nm
ABSORPTIVITY  (ON DRIED MATERIAL) 380-475 nm
LOSS ON DRYING MAX 10 % 
Remarks:

Name – Indigo Carmine
Classification – C.I No.-73015/E132/F.D&C BLUE  2/Indigotine/C.I. FOOD BLUE 1/I.S.1698

No. Characteristic Requirement
  Description Reddish Blue Powder
1 Total colour/Assay, percent by Mass, min. 85.00
2 Water-insoluble matter, percent by mass, Max. 00.20
3 Combined ether extracts, percent by mass, Max. 00.20
4 Subsidiary dyes, percent by mass, Max. 02.00
5 Dye intermediates, percent by mass, max.
• Isatin sulphanic acid,
• 5- Sulfoanthranilic acid		 00.50
6 Unsulfonated primary aromatic amine (calculated as aniline)
percent by mass, max		 No
7 Lead, mg/kg, Max. 10.00
8 Arsenic, mg/kg, Max 03.00
9 Heavy metals, (as pb) mg/kg, max 40.00
10 Mercury, mg/kg, Max. 01.00
11 Cadmium, mg/kg, Max 01.00
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