GENERAL
DESCRIPTION Typical appearance: white solid
Analytical use: buffer solutions
Change in state (approximate): melting point, 132-135 °C
Aqueous solubility: 109 g in 100 mL at 100 °C
pK2 1.0
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Urea
ACSGENERAL
DESCRIPTION | SPECIFICATIONS | |
| Cas No | 57-13-6 |
| Molecular Formula | NH2CONH2 |
| Molecular Weight | 60.06 |
| Assay | 99.0-100.5% NH2CONH2 |
| Melting point | 132-135 0C |
| Maximum Allowable | |
| Insoluble matter | 0.01% |
| Residue after ignition | 0.01% |
| Chloride (Cl) | 5 ppm |
| Sulfate (SO4) | 0.001% |
| Heavy metals (as Pb) | 0.001% |
| Iron (Fe) | 0.001% |
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| Urea AR | |
| Synonym | CARBAMIDE |
| CAS No. | 57-13-6 |
| Molecular Formula | NH2CONH2 |
| Molecular Weight | 60.06 |
| Description | WHITE CRYSTALLINE POWDER, ODOURLESS, SLIGHTLY HYGROSCOPIC |
| Specifications | |
| SOLUBLE IN WATER | SOLUBILITY SOLUBLE IN WATER |
| APPEARANCE of SOLUTION | DISSOLVE 50 GM IN WATER TO PRODUCE 500 ML. |
| THE SOLUTION IS CLEAR AND COLOURLESS | |
| WATER INSOLUBLE MATTER | MAX 0.005% |
| SULPHATED ASH | MAX. 0.01% |
| CHLORIDE | MAX. 0.0005% |
| SULPHATE | MAX. 0.001% |
| LEAD | MAX. 0.0002% |
| IRON | MAX. 0.0002% |
| COPPER | MAX. 0.0005% |
| MELTING POINT | 132 DEG.-133 DEG. C |
| BIURET | MAX. 0.05% |
| ASSAY | MIN. 99.5% AS NH2CONH2 |
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| Urea Extra Pure | |
| Synonym | CARBAMIDE |
| CAS No. | 57-13-6 |
| Molecular Formula | NH2.CO.NH2 |
| Molecular Weight | 60.06 |
| Description | White Crystals or Crystalline Powder |
| Specifications | |
| SOLUBILITY | VERY SOLUBLE IN WATER, SOLUBLE IN ALCOHOL. |
| PRACTICALLY INSOLUBLE IN ETHER AND CHLOROFORM | |
| APPEARANCE OF SOLUTION | AQ. SOLUTION (10%) IS CLEAR AND COLORLESS |
| MELTING POINT | 131 0C – 134 0C |
| CHLORIDE | MAX. 0.005% |
| SULPHATE | MAX. 0.01 % |
| SULPHATED ASH | MAX. 0.1 % |
| ASSAY | MIN 99.0% |
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Zinc
Acetate Dihydrate ACS
GENERAL
DESCRIPTION| SPECIFICATIONS | |
| Cas No | 5970-45-6 |
| Molecular Formula | (CH3COO)2Zn.2H2O |
| Molecular Weight | 219.53 |
| Assay | 98.0-101.0% (CH3COO)2Zn • 2H2O |
| pH of a 5% solution at 25.0 °C | 6.0-7.0 |
| Maximum Allowable | |
| Insoluble matter | 0.005% |
| Chloride (Cl) | 5 ppm |
| Sulfate (SO4) | 0.005% |
| Calcium(Ca) | 0.005% |
| Magnesium (Mg) | 0.005% |
| Potassium(K) | 0.01% |
| Sodium (Na) | 0.05% |
| Iron (Fe) | 5 ppm |
| Lead(Pb) | 0.002% |
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| ZINC ACETATE AR | |
| Synonym | ZINC ETHANOATE, ZINC ETHANOATE DIHYDRATE, |
| ACETIC ACID ZINC SALT DIHYDRATE | |
| CAS No. | 5970-45-6 |
| Molecular Formula | (CH3.COO)2Zn.2H2O |
| Molecular Weight | 219.5 |
| Description | WHITE CRYSTALLINE POWDER |
| Specifications | |
| SOLUBILITY | FREELY SOLUBLE IN WATER |
| APPEARANCE OF SOLUTION | DISSOLVE 50 GM IN WATER TO PRODUCE 500 ML |
| THE SOLUTION IS CLEAR AND COLOURLESS | |
| WATER INSOLUBLE MATTER | MAX 0.005% |
| CHLORIDE | MAX. 0.001% |
| POTASSIUM | MAX. 0.01% |
| SULPHATE | MAX 0.005% |
| COPPER | MAX. 0.001% |
| CALCIUM | MAX. 0.01% |
| IRON | MAX. 0.0005% |
| LEAD | MAX. 0.001% |
| SODIUM | MAX. 0.005% |
| Nitrogen (N) | MAX. 0.002% |
| ASSAY | MIN. 99.5% as CH3.COO2ZN.2H2O |
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| ZINC ACETATE LR | |
| Cas No | 5970-45-6 |
| Molecular Formula | Zn(CH3COO)2.2H2O |
| Molecular Weight | 219.53 |
| Description | White crystalline compound. |
| Insoluble matter | max. 0.005% |
| Assay | min.98.0.% |
| pH of 5% sol | 6.0-7.0 |
| Chloride (Cl) | max.0.005% |
| Sulphate(SO4) | max.0.01% |
| Iron (Fe) | max.0.005% |
| Heavy Metals (Pb) | max.0.002% |
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