CDH Products

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1Zinc Oxide Pure.-Description: White to yellowish powder.
-Solubility: Soluble in dilute mineral acids.
-Minimum assay (Complexometric,calc. on ignited basis)
99.0% .
-Carbonates and colour of solution Passes test.
-MAXIMUM LIMIT OF IMPURITIES.
-Loss on Ignition (at 500°C) 1.0%.
-Chloride (Cl) 0.005% .
-Sulphate (SO4) 0.05% .
-Iron (Fe) 0.005%.
2Potassium Tartrate Extra Pure:-Description: White/colourless powder or small crystals.
-Solubility Soluble in water.
-Minimum assay (Non Aqueous) 98.0%

MAXIMUM LIMIT OF IMPURITIES:
-Calcium (Ca) 0.01%
-Copper (Cu) 0.005%
-Iron (Fe) 0.005%
-Lead (Pb) 0.005%
-Sulphate (SO4) 0.1%
-Zinc (Zn) 0.005%
3Potassium Sulphate Low in Nitrogen Content Suitable for Protein Test.-Description Colourless crystals /crystalline powder.
-Solubility Dissolve 5 gm sample in 50 ml of hot water and heat on the steam bath for 1 hour ,The resulting solution should be clear and colourless.
-Minimum Assay ( Alkalimetric) 99.0%
-pH of (5% solution in water) 5.5 – 8.5.

MAXIMUM LIMIT OF IMPURITIES:

-Loss on drying (at 130°C for 4 hours.) 1.0%
-Total Nitrogen (N) 0.005%
-Chloride (Cl) 0.05%
-Iron (Fe) 0.001%
-Lead (Pb) 0.003%
4Potassium Dihydrogen Ortho Phosphate Anhydrous Purified-Description A white crystalline powder.
-Solubility 10% solution in water is clear and colourless.
-Assay (Acidimetric) 99.0 - 101.0%
pH of (5% solution in water) 4.3 - 4.5

MAXIMUM LIMIT OF IMPURITIES
-Chloride (Cl) 0.01%
-Sulphate (SO4) 0.05%
5Oxalic Acid Purified (Ethanedioic acid).-Description: Colourless crystals free from efflorescence.
-Solubility: 10% solution in hot water is clear and colourless.
-Minimum Assay (Oxidimetric): 99.5%
MAXIMUM LIMIT OF IMPURITIES
Sulphated ash: 0.1%
Chloride (Cl): 0.005%
Sulphate (SO4): 0.02%
Heavy metals (Pb): 0.005%
6Sulphur Powder Extra Pure-Description: Yellow coloured powder.
-Solubility: Practically insoluble in water.
-Minimum assay: 98.0%
-Melting point: 1050-1150C
7Sodium Dihydrogen Ortho Phosphate Dihydrate Cryst.
-Description: Small colourless crystals/crystalline powder.
-Solubility: 10% solution in water is clear and colourless.
-Minimum Assay (Acidimetric): 98.0%

MAXIMUM LIMIT OF IMPURITIES:
-Chloride (Cl) 0.01%
-Sulphate (SO4) 0.05%
-Iron (Fe) 0.002%
-Lead (Pb) 0.0005%
8Menthol Crystal Natural-Description: Colourless hexagonal or needle like or prismatic crystals.
-Solubility: 10% solution in ethanol is clear and colourless.
-Identification: Passes test.
-Minimum Assay (GC): 99.0%
-Melting Point: 41 – 44°C
-Specific Rotation (C=10% in ethanol) - 48° to -51°.

MAXIMUM LIMIT OF IMPURITIES:
-Acidity or alkalinity: Passes test.
-Non volatile matter :0.05%
-Organic volatile impurities: Passes test.
-Related substance (By GC): Passes test
9Sodium Lauryl Sulphate (Needle Shape):-Description: A white/ almost white needles.
-Solubility: 0.1 M solution in water is clear to nearly clear and colourless to slightly yellow.
-Minimum Assay [as Sodium lauryl sulphates]: 90.0%
-pH of (1% solution in water): 7.5 – 10.5

MAXIMUM LIMIT OF IMPURITIES
-Loss on drying: 5.0%
-Sodium chloride: 0.5%
-Sodium sulphate: 4.0%
10Gum Tragacanth Powder-Description: White to yellow to light brown powder.
-Solubility: 2% w/v solution in water swells to form a smooth, stiff, opalescent mucilage.

MAXIMUM LIMIT OF IMPURITIES
-Loss on drying: (1050 for 5 hrs.) 16%.
-Sulphated ash: 4.0%.
-Arsenic (As): 0.0003%.
-Heavy metals (Pb): 0.005%.
11Polyethylene Glycol 6000 Flakes/Powder-Description White to creamy white waxy-like solid or flakes.
-Solubility 10% solution in water is clear not more than 20 -Hazen unit in colour .
-Identification: Passes tests.
-Appearance of solution. :Passes test
-pH (of 5% solution in water): 4.5 - 7.5
-Viscosity of 25% aqueous solution at 20°C: 14 -19 cS
-Hydroxyl value: 16 – 22
-Freezing Point: 56 – 60
-Average molecular weight: 5000 - 7000

MAXIMUM LIMIT OF IMPURITIES
-Moisture (by KF): 2.0%
-Acidity / Alkalinity: Passes tests
-Arsenic (As): 0.0003%
-Heavy metals (as Pb): 0.0005%
-Sulphated ash: 0.1%
-Dioxane (GC): 0.001%
-Reducing substance: Passes test
12Kaolin Pure-Description Light white powder free from gritty particles.
-Solubility Insoluble in water and in mineral acids.
MAXIMUM LIMIT OF IMPURITIES
-Loss on ignition (at 600°C) 15.0%
-Soluble in acid (as sulphate) 1.0%
-Chloride (Cl) 0.04%
-Sulphate (SO4) 0.1%
-Heavy Metals (Pb) 0.002%
-Swelling capacity Passes test.
-Adsorption capacity Passes test
13Polyethylene Glycol 6000 Flakes/Powder-Description White to creamy white waxy-like solid or flakes.
-Solubility 10% solution in water is clear not more than 20 Hazen unit in colour .
-Identification Passes tests.
-Appearance of solution. Passes test
-pH (of 5% solution in water) 4.5 - 7.5
-Viscosity of 25% aqueous solution at 20°C 14 -19 cS
-Hydroxyl value 16 – 22
-Freezing Point 56 – 60
-Average molecular weight 5000 - 7000
MAXIMUM LIMIT OF IMPURITIES
-Moisture (by KF) 2.0%
-Acidity / Alkalinity Passes tests
-Arsenic (As) 0.0003%
-Heavy metals (as Pb) 0.0005%
-Sulphated ash. 0.1%
-Dioxane (GC) 0.001%
-Reducing substance Passes test
14Lactose (a-Lactose Monohydrate)-Description A white to almost white crystalline powder.
-Solubility 10% solution in hot water (50°C) is clear.
-Specific Rotation [α] 20° (C=10%, in water,D Calc.on anhydrous subs.) +54.4°to +55.9°

MAXIMUM LIMIT OF IMPURITIES

-Sulphated ash 0.1%
-Uncombined water 1.0%
-Arsenic (As) 0.0001%
-Lead (Pb) 0.0002%
15Quinine Sulphate-Description White to off white powder.
-Solubility Slightly soluble in water.
-Minimum Assay (Non - aqueous) 99.5%
-Specific rotation (α) (C=2, 0.1 N HCl) - 248° to - 240°
-pH of (1% solution) 5.7 - 6.5
MAXIMUM LIMIT OF IMPURITIES
-Sulphated ash 0.1%
-Loss on drying at 105°C 3.5 - 4.5%
-Residue on ignition 0.05%
-Readily carbonisable subs. Passes test.
-Heavy metals (Pb) 0.001%
16Silver Nitrate-Description: Colourless crystals/crystalline powder darkening on exposure to light.
-Solubility: 10% solution in water is clear and colourless.
-Minimum: Assay (Argentometric ex Ag) 99.8%

MAXIMUM LIMIT OF IMPURITY
-Chloride (Cl) 0.001%
-Sulphate (SO4) 0.02%
17Zinc Sulphate Heptahydrate Purified (Zinc sulphate -7-hydrate)-Description Colourless or white efflorescent crystals or crystalline powder.
-Solubility 10% solution in water is clear and colourless.
-Minimum Assay (Complexometric)
-(a) As a Zn3+ 22.5%
-(b) As a ZnSO4 3- 33.0%
-pH (5% soln. in water) 4 - 6

MAXIMUM LIMIT OF IMPURITIES
-Insoluble matter 0.1%
-Chloride (Cl) 0.002%
-Total Nitrogen (N) 0.005%
-Cadmium (Cd) 0.001%
-Copper (Cu) 0.0005%
-Iron (Fe) 0.02%
-Lead (Pb) 0.002%
18Talcum Powder Pract-Description: Fine white amorphous powder.
-Solubility: Practically insoluble in water.
-pH of (10% suspension) About 9.3
-Ferric oxide (Fe2O3) 0.5%

MAXIMUM LIMIT OF IMPURITY
-Loss on drying (at 180°C) 1.0%
19L (+) Tartaric Acid Cryst.Pure (Dextro-Rotatory (+) Tartaric Acid).-Description Colourless or white or almost white crystals / crystalline powder.
-Solubility 10% solution in water is clear and colourless to not more than slightly coloured.
-Minimum Assay (Acidimetric) 99.0%
-Specific Rotation [α] 20/𝐷 (C=20% soln in water) + 12°to +13°

MAXIMUM LIMIT OF IMPURITIES:
-Loss on drying (at 105°C) 0.5%
-Sulphated ash 0.05%
-Chloride (Cl) 0.002%
-Sulphate (SO4) 0.05%
-Iron (Fe) 0.002%
20tri Sodium Citrate Dihydrate (tri-Sodium Citrate-2 hydrate) Meets Analytical Specification of FCC-Description: Colourless crystals or a white, crystalline powder.
-Solubility 10% solution in water is clear and colourless.
-Identification Passes test.
-Assay (Cal.on anhydrous basis; Non-aqueous) 99.0 - 100.5%
-Water (By KF) 10 – 13%

MAXIMUM LIMIT OF IMPURITIES
-Acidity or alkalinity Passes test.
-Chloride (Cl) 0.01%
-Sulphate (SO4) 0.02%
-Heavy metals (as Pb) 0.001%
21L-Ascorbic Acid-Description Almost white to pale yellow to brown crystalline powder.
-Solubility 10% solution in water is clear and almost colourless.
-Identification Passes test
-Minimum Assay (Iodometric) 99.0%
-Melting point 190 – 1920C
-Specific Optical rotation (a) 20/𝐷
-(C=10%,in water at 20°C) +20.50 to +21.50

MAXIMUM LIMIT OF IMPURITIES:
-Residue on ignition 0.1%
-Iron (Fe) 0.001%
-Heavy Metals (as Pb) 0.001%
22tri-Potassium Citrate Purified-Description White crystals/crystalline powder.
-Solubility 10%solution in water is clear and colourless.
-Assay ( Non-aqueous, Calc. on anhydrous subs.) 99.0 - 101 .0%

MAXIMUM LIMIT OF IMPURITIES
-Acidity or alkalinity Passes test (NMT 0.5 ml of 0.1 N HCl / 0.1 N NaOH)
-Chloride (Cl) 0.02%Sulphate (SO4) 0.02%
23Ammonium Acetate Cryst. Pure-Description Colourless hygroscopic crystals with a faint odour.
-Solubility 10% solution in water is clear and colourless.
-Minimum assay (Acidimetric, ex NH3) 96.0%

MAXIMUM LIMIT OF IMPURITIES
-Non volatile matter 0.02%
-Chloride (Cl) 0.001%
-Sulphate (SO4) 0.01%
-Iron (Fe) 0.0005%
-Lead (Pb) 0.0005%
24Aluminium Oxide Acidic (Brockmann Grade I, II)-Description White to Almost white fine powder.
-Mesh size (100-300 mesh) Min. 90.0%
-Suitability test Passes test.
-pH (10% Aq. suspension) 3.5 - 4.5

MAXIMUM LIMIT OF IMPURITIES
-Chloride (Cl) 0.3%
-Sulphate (SO4) 0.1%
-Water solubles 0.5%
25Cetostearyl Alcohol Meets Analytical Specification of IP, BP, USP, MF, Ph. Eur.-Description White to pale yellow wax-like mass, plates, flakes or granules.
-Solubility 2.5% solution in boiling alcohol is clear.
-Assay(as stearyl alcohol) (GC) Min. 40.0%
-Sum of cetyl alcohol & stearyl alcohol Min. 90.0%
-Melting Point 49°- 56°C
-Hydroxyl value 208 – 228

MAXIMUM LIMIT OF IMPURITIES
-Acidity 1 ml N%
-Alcohols Passes test.
-Hydrocarbons Passes test.
-Acid value 1.0
-Iodine value 2.0
-Saponification value 2.0
26di-Potassium Hydrogen Ortho Phosphate (Dibasic) Anhydrous.-Description A white hygroscopic crystalline powder.
-Solubility 10% solution in water is clear and colourless.
-Minimum Assay (Acidimetric) 98.0%

MAXIMUM LIMIT OF IMPURITIES
-Chloride (Cl) 0.005%
-Sulphate (SO4) 0.02%
-Arsenic (As) 0.0001%
-Lead (Pb) 0.001%
27Magnesium Chloride Hexahydrate Purified Cryst.-Description A colourless deliquescent crystals / crystalline powder.
-Solubility 10% solution in water is clear and colourless.
-Minimum Assay (Complexometric) 98.0%

MAXIMUM LIMIT OF IMPURITIES
-Phosphate (PO4) 0.004%
-Sulphate (SO4) 0.04%
-Calcium (Ca) 0.05%
-Iron (Fe) 0.002%
28Resorcinol for Synthesis-Description White/off white to pale yellow/beige /buff crystals or flakes.
-Solubility 10% solution in water is clear and colourless or pale yellow in colour.
-Identification (By FTIR) Conforms.
-Minimum assay (GC) 99.0%
-Melting range 109.0°- 111.0°C

MAXIMUM LIMIT OF IMPURITY
-Sulphated ash 0.1%
29Cetyl Alcohol Pure-Description White or almost white crystalline Powder, granules or flakes.
-Solubility 2.5% soln. in 96% ethanol is clear and colouless to almost colourless.
-Identification (By GC) Conforms.
-Minimum Assay (GC) 95.0%
-Hydroxyl Value (mg KOH/g) 218 - 225
-Melting range 46° - 52°C
MAXIMUM LIMIT OF IMPURITIES
-Acid Value (mg KOH/g) 1.0
-Iodine Value (g/ 100 g) 2.0
-Saponification Value (mg KOH/g) 2.0
-Other residual solvent Meets the requirement
30Citric Acid Monohydrate-Description Colourless crystals/ crystalline powder.
-Solubility 10% solution in water is clear and colourless.
-Identification (FTIR) Conforms.
-Minimum Assay(Acidimetric) 99.5%

MAXIMUM LIMIT OF IMPURITIES
-Sulphated ash 0.02%
-Sulphate (SO4) 0.01%
-Iron (Fe) 0.0005%
-Lead (Pb) 0.0005%
31Dextrin White Pract-Description White amorphous powder.
-Solubility Readily soluble in hot water.

MAXIMUM LIMIT OF IMPURITIES
-Sulphated ash 0.2%
-Loss on drying at 110°C 5.0%
-Reducing sugars (as Dextrose) 4.0%
32Bentonite Powder-Description Almost white to pale buff fine powder.
-Solubility Insoluble in water but swells into a homogenous mass.
-pH of (2% suspension in water) 9.0 – 10.5

MAXIMUM LIMIT OF IMPURITY
-Loss on drying at 105°C 5 – 10%
33Sucrose (Saccharose)

-Description Colourless crystals/crystalline powder.
-Solubility 10% solution in water is clear and colourless.

MAXIMUM LIMIT OF IMPURITIES
-Sulphated ash 0.02%
-Reducing sugars 0.02%
-Acidity or alkalinity 0.2 ml N/1%
-Lead (Pb) 0.0004%
34Sodium Acetate Anhydrous-Description White or almost white masses or coarse powder.
-Solubility 10% solution in water is clear and colourless.
-Minimum Assay (Non-aqueous) 98.0%

MAXIMUM LIMIT OF IMPURITIES
-Chloride (Cl) 0.02%
-Sulphate (SO4) 0.03%
-Iron (Fe) 0.002%
-Lead (Pb) 0.002%
35Calamine-Description An amorphous, pink or reddish brown powder, the colour depending on the variety and amount of iron (III) oxide present and the process by which it is incorporated.
-Solubility Practically insoluble in water. It dissolves with effervescence in hydrochloric acid.
-Identification Passes test.
-Residue on ignition 68 – 74%

MAXIMUM LIMIT OF IMPURITIES
-Matter insoluble in HCl 1.0%
-Soluble barium salt Passes test.
-Chloride (Cl) 0.07%
-Sulphate (SO4) 40.6%
-Calcium (Ca) Passes test.
-Ethanol soluble dyes Passes test.
-Lead (Pb) 0.015%
-Water soluble dyes Passes test
36Aluminium Hydroxide GEL (Powder)-Description A white amorphous powder.
-Solubility Passes test.
-Minimum assay (asAl2O3) 47.0%
-pH (of 4% suspension in water) Max. 10.0

MAXIMUM LIMIT OF IMPURITIES
-Chloride (Cl) 0.5%
-Sulphate (SO4) 0.6%
-Arsenic (As) 0.0004%
37Tris (Hydroxymethyl) Aminomethane for Molecular Tris (Hydroxymethyl) Aminomethane for Molecular Biology A 40% at 290 nm......max 0.03 (Tris Buffer, Tris Base) DNase, RNase, protease not detected

-Description White crystalline powder.
-Solubility 40% solution in HPLC water is clear and not more than 10 APHA in colour.
-Identification (By FTIR) Conforms.
-Minimum Assay (Acidimetric, on dried material) 99.8%
-Melting point 168-172°C
-pH (of 1M soln. in water) 10.5 – 12.0

MAXIMUM LIMIT OF IMPURITIES
-Loss on drying (at 105°C) 0.5%
-Maximum UV Absorbance (1M soln. in HPLC water) at 260 nm 0.04
-Maximum UV Absorbance
(40% soln.in HPLC water,1cm) at 290 nm 0.05
-Insoluble matter Passes filter test.
-Chloride (Cl) 0.002%
-Sulphate(SO4) 0.0005%
-Iron (Fe) 0.0005%
-Heavy metals (as Pb) 0.0002%
-RNase Dnase, Protease and phosphatases None detected.
38Sodium Acetate Anhydrous-Description White or almost white masses or coarse powder.
-Solubility 10% solution in water is clear and colourless.
-Minimum Assay (Non-aqueous) 98.0%

MAXIMUM LIMIT OF IMPURITIES
-Chloride (Cl) 0.02%
-Sulphate (SO4) 0.03%
-Iron (Fe) 0.002%
-Lead (Pb) 0.002%
39Aspirin (Acetyl Salicylic Acid)-Description A white crystalline powder.
-Solubility 10.0% ethanolic solution is clear and colourless.
-Identification Passes test
-Minimum Assay 99.0%
-Melting point 134-136°C

MAXIMUM LIMIT OF IMPURITIES
-Chloride (Cl) 0.01%
-Sulphate (SO4) 0.02%
-Heavy metals (as Pb) 0.001%
-Loss on drying 0.5%
-Sulphated ash 0.05%
40Phenyl Mercuric Acetate-Description White to almost white fine powder.
-Solubility Slightly soluble in boiling water.
-Minimum Assay (ex Hg, Argentometric ) 98.0%
-Melting Point 149°- 155°C

MAXIMUM LIMIT OF IMPURITY
-Sulphated ash 0.2%
41Atropine Sulphate Monohydrate Meets Analytical Specification of IP, BP, USP, Ph. Eur. anhy. subs.)
-Description A white crystalline powder or colourless crystals.
-Solubility 10% solution in water is clear and colourless.
-Identification Passes tests.
-Assay (Non-aqueous; calc. w.r.t. anhy. subs.) 99.0 – 101%
-Melting point About 190°C
-pH (2% solution) 4.5 - 6.2
-Optical Rotation
(C=10 in water) - 0.5°to + 0.05°

MAXIMUM LIMIT OF IMPURITIES

-Water (By KF) 2 - 4%
-Acidity 0.6 ml N/%
-Apoatropine About 0.5%
-Foreign alkaloid and decomposition product Passes test.
-Organic volatile impurities Meets the requirement.
-Residue on ignition 0.1%
42Iodine Resublimed Meets Analytical Specification of IP, BP, Ph. Eur-Description: Greyish violet brittle plates /scales/small crystals/granules with metallic sheen.

-Solubility: (Take 2.5 gm sample + 5 gm KI + 5 gm Na2S2O3 in 85 ml of water) A clear colourless solution is obtained.
-Identification Passes test.
- Minimum Assay ( oxidimetric ) 99.5%

MAXIMUM LIMIT OF IMPURITIES
- Non volatile matter 0.1%
- Bromine & chlorine (Cl) 0.01%
43Bismuth Subnitrate-Description White heavy slightly hygroscopic powder.
-Solubility Insoluble in water & alcohol, soluble in acids.
-Assay (Complexometric :as Bi) 71.0-74.0%
44Bismuth Nitrate Pentahydrate Purified (Bismuth III Nitrate)-Description Colourless deliquescent crystals with an odour of Nitric acid.
-Solubility 10% solution in water in a mixture of dilute nitric acid and water is clear and colourless.
-Minimum Assay (Complexometric) 98.0%

MAXIMUM LIMIT OF IMPURITIES
-Chloride (Cl) 0.005%
-Sulphate (SO4) 0.02%
45Aluminium Hydroxide GEL (Powder)-Description A white amorphous powder.
-Solubility Passes test.
-Minimum assay (asAl2O3) 47.0%
-pH (of 4% suspension in water) Max. 10.0

MAXIMUM LIMIT OF IMPURITIES
-Chloride (Cl) 0.5%
-Sulphate (SO4) 0.6%
-Arsenic (As) 0.0004%
46Cween 80 Meets Analytical Specification of IP, BP, USP, Ph. Eur-Description A clear pale yellow to brownish yellow viscous liquid.
-Solubility 5% solution in water is clear & pale yellow in colour.
-pH (5% Solution) 6.0 – 8.0
-Wt. per ml at 20°C 1.06 - 1.09 g
-Refractive index (n) D20 1.471 - 1.473
-Saponification value 45 - 55
-Viscosity value at 25°C 400 - 500 cS
-Hydroxyl value 65 – 80
-Iodine value 18 – 24

MAXIMUM LIMIT OF IMPURITIES
-Acid value 2.0
-Water 3.0%
-Reducing impurities Passes test.
-Heavy metals (as Pb) 0.001%
-Sulphated ash 0.2%
-Arsenic (As) 0.001%
-Peroxide value 10
-Ethylene oxide 0.0001%
-Dioxan 0.001%
-Organic volatile impurities meets the requirement
47Polyethylene Glycol 600 for Synthesis

-Description A clear, colourless, odourless viscous liquid.
-Solubility 10% solution in water is clear & colourless.
-Wt. per ml at 20°C About 1.12 g
-Average molecular weight 570 - 630
-Freezing Point About 20°C

MAXIMUM LIMIT OF IMPURITIES
-Acidity (as acetic acid) 0.05%
48Terpineol (Mixture of isomers)
-Description Colourless to nearly colourless liquid or transparent crystals.
-Solubility Soluble in 2 Volumes 70% alcohol.
-Minimum assay(Mix Isomers) 98.0%
-Refractive Index(n) 1.482 - 1.485
-Wt. per ml at 20°C 0.931 - 0.935 g

MAXIMUM LIMIT OF IMPURITY
-Water 0.5%