MERCK 104952.0250 Potassium Chromate GR CAS No.7789-00-6
| Description |
|---|
| Catalogue Number | 104952 |
| Synonyms | chromic acid potassium salt |
| Product Information |
|---|
| CAS number | 7789-00-6 |
| EC index number | 024-006-00-8 |
| EC number | 232-140-5 |
| Grade | ACS,Reag. Ph Eur |
| Hill Formula | CrK₂O₄ |
| Chemical formula | K₂CrO₄ |
| Molar Mass | 194.2 g/mol |
| HS Code | 2841 50 12 |
| Quality Level | MQ300 |
| Physicochemical Information |
|---|
| Density | 2.73 g/cm3 |
| Melting Point | 968.3 °C |
| pH value | 8.5 - 10.0 (50 g/l, H₂O, 20 °C) |
| Bulk density | 1400 kg/m3 |
| Solubility | 637 g/l |
| Safety Information according to GHS |
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| Hazard Pictogram(s) | |
| Hazard Statement(s) | H315: Causes skin irritation.H317: May cause an allergic skin reaction.H319: Causes serious eye irritation.H335: May cause respiratory irritation.H340: May cause genetic defects.H350i: May cause cancer by inhalation.H410: Very toxic to aquatic life with long lasting effects. |
| Precautionary Statement(s) | P202: Do not handle until all safety precautions have been read and understood.P273: Avoid release to the environment.P280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection.P302 + P352: IF ON SKIN: Wash with plenty of water.P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.P308 + P313: IF exposed or concerned: Get medical advice/ attention. |
| Signal Word | Danger |
| Storage class | 6.1D Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects |
| WGK | WGK 3 highly hazardous to water |
| Disposal | 22Inorganic peroxides and oxidants as well as bromine and iodine should be rendered harmless by reduction with acidic sodium thiosulfate solution (Cat. No. 106513); container D or E. Slightly soluble oxidants should be collected separately in container E or I. |
| Safety Information |
|---|
| Categories of danger | carcinogenic, mutagenic, irritant, sensitizing, dangerous for the environment |
| Storage and Shipping Information |
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| Storage | Store at +2°C to +30°C. |
| Transport Information |
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| Declaration (railroad and road) ADR, RID | UN 3077, 9, III |
| Declaration (transport by air) IATA-DGR | UN 3077, 9, III |
| Declaration (transport by sea) IMDG-Code | UN 3077, 9, III, Marine Pollutant: P |
| Specifications |
|---|
| Assay (iodometric) | ≥ 99.5 % |
| In water insoluble matter | ≤ 0.005 % |
| pH-value (5 %; water) | 9.0 - 9.8 |
| Chloride (Cl) | ≤ 0.001 % |
| Sulfate (SO₄) | ≤ 0.01 % |
| Ca (Calcium) | ≤ 0.005 % |
| Na (Sodium) | ≤ 0.02 % |
| Pb (Lead) | ≤ 0.005 % |
| Global Trade Item Number |
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| Catalogue Number | GTIN |
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| 1049520250 | 04022536057965 |
| 1049521000 | 04022536057972 |
