| Specifications | |
|---|---|
| Assay (iodometric) | ≥ 99.5 % |
| In water insoluble matter | ≤ 0.005 % |
| pH-value (5 %; water) | 9.0 - 9.8 |
| Chloride (Cl) | ≤ 0.001 % |
| Sulphate (SO₄) | ≤ 0.01 % |
| Ca (Calcium) | ≤ 0.005 % |
| Na (Sodium) | ≤ 0.02 % |
| Pb (Lead) | ≤ 0.005 % |
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Key Spec Table
| CAS # | EC Number | Hill Formula | Chemical Formula | Molar Mass | Grade Value |
|---|---|---|---|---|---|
| 7789-00-6 | 232-140-5 | CrK₂O₄ | K₂CrO₄ | 194.19 g/mol | ACS,Reag. Ph Eur |
| 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 | 194.19 g/mol |
| HS Code | 2841 50 00 |
| Applications | |
|---|---|
| Application | Potassium chromate for analysis EMSURE® ACS,Reag. Ph Eur. Potassium chromate CAS No. 7789-00-6, EC Number 232-140-5. Potassium chromate MSDS (material safety data sheet) or SDS here. |
| Physicochemical Information | |
|---|---|
| Boiling point | 1000 °C |
| Density | 2.73 g/cm3 (18 °C) |
| Melting Point | 985 °C |
| pH value | 9.0 - 9.8 (50 g/l, H₂O, 20 °C) |
| Bulk density | 1400 kg/m3 |
| Solubility | 637 g/l |
| Safety Information according to GHS | |
|---|---|
| Hazard Pictogram(s) |    |
| Hazard Statement(s) | H340: May cause genetic defects. H350i: May cause cancer by inhalation. H315: Causes skin irritation. H317: May cause an allergic skin reaction. H319: Causes serious eye irritation. H335: May cause respiratory irritation. H410: Very toxic to aquatic life with long lasting effects. |
| Precautionary Statement(s) | P201: Obtain special instructions before use. P273: Avoid release to the environment. P280: Wear protective gloves. P302 + P352: IF ON SKIN: Wash with plenty of soap and 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. |
| Storage class | 6.1B Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials |
| WGK | WGK 3 highly water endangering |
| Disposal | 22 Inorganic 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 | |
|---|---|
| Hazard Symbols |  Toxic Dangerous for the environment |
| Categories of danger | carcinogenic, mutagenic, irritant, sensitizing, dangerous for the environment |
| R Phrase | R 49-46-36/37/38-43-50/53 May cause cancer by inhalation.May cause heritable genetic damage.Irritating to eyes, respiratory system and skin.May cause sensitisation by skin contact.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| S Phrase | S 53-45-60-61 Avoid exposure - obtain special instructions before use.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets. |
| Storage and Shipping Information | |
|---|---|
| Storage | Store below +30°C. |
| Transport Information | |
|---|---|
| Declaration (railroad and road) ADR, RID | UN 3288 , 6.1, II |
| Declaration (transport by air) IATA-DGR | UN 3288 , 6.1, II |
| Declaration (transport by sea) IMDG-Code | UN 3288 , 6.1, II |
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