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POTASSIUM CARBONATE |
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PRODUCT IDENTIFICATION |
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| CAS NO. |
584-08-7 |
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| EINECS NO. |
209-529-3 |
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| FORMULA |
K2CO3 |
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| MOL WT. | 138.21 | |
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H.S. CODE |
2836.40 | |
| TOXICITY | Oral rat LD50: 1870 mg/kg | |
| SYNONYMS | Potash; Salt of Tartar; Carbonic acid, Dipotassium salt; | |
| Potassium carbonate (2:1); Kaliumcarbonat; Pearl ash; | ||
| SMILES |
by the reaction of carbon dioxide with potassium chloride + magnesium oxide (Engel-Precht process) or electrolytic caustic lye. |
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE |
white powder or granular |
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| MELTING POINT |
891 C |
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| BOILING POINT | Decomposes | |
| SPECIFIC GRAVITY | 2.29 | |
| SOLUBILITY IN WATER |
soluble (insoluble in alcohol) |
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| pH | 11.6 (Aqueous solution) | |
| VAPOR DENSITY | ||
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AUTOIGNITION |
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NFPA RATINGS |
Health: 2 Flammability: 0 Reactivity: 1 | |
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REFRACTIVE INDEX |
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| FLASH POINT | Not considered to be a fire hazard | |
| STABILITY | Stable under ordinary conditions | |
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APPLICATIONS |
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Potassium Carbonate is used in glasses, ceramics, explosives, fertilizers,and glazes industry, in the the manufacture of soft soaps, inorganic salts, and in dyeing and wool finishing. |
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| SALES SPECIFICATION | ||
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APPEARANCE |
white powder |
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| ASSAY |
98.5% min |
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| CHLORIDES |
0.1% max |
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| SULPHATES |
0.1% max |
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| Fe |
0.003% max |
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| WATER INSOLUBLES |
0.05% max |
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| HEAVY METALS |
10ppm max |
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| MEAN PARTICLE SIZE |
0.25 - 1mm |
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| TRANSPORTATION | ||
| PACKING | 50kgs in bag | |
| HAZARD CLASS | listed on the TSCA inventory | |
| UN NO. | ||
| REMARKS | ||
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Commercially anhydrous and 1.5 hydrated forms are available. K2CO3 (melting point at 891 C) decomposes before boiled. 2K2CO3.3H2O dehydrates to K2CO3.H2O at 100 C and to K2CO3 at 130 C. |
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