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Potassium Carbonate Specification |
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| PRODUCT IDENTIFICATION |
| CAS NO. |
584-08-7 |
| EINECS NO. |
209-529-3 |
| FORMULA |
K2CO3 |
| MOL WT. |
138.21 |
| H.S. CODE |
2836.40 |
| TOXICITY |
Oral rat LD50: 1870 mg/kg |
| SYNONYMS |
Potash; Salt of Tartar; Carbonic acid, Dipotassium salt;
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| DERIVATION |
by the reaction of carbon dioxide with potassium chloride + magnesium oxide (Engel-Precht process) or electrolytic caustic lye.
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| PHYSICAL AND CHEMICAL PROPERTIES |
| 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) |
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NFPA RATINGS
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Health: 2 Flammability: 0 Reactivity: 1 |
| FLASH POINT |
Not considered to be a fire hazard |
| STABILITY |
Stable under ordinary conditions |
| sales specification |
| APPEARANCE |
white powder |
| ASSAY |
98.5% min |
| CHLORIDES |
0.1% max |
| SULPHATES |
0.1% max |
| Fe |
0.003% max |
| WATER INSOLUBLES |
0.05% max |
| HEAVY METALS |
10ppm max |
| MEAN PARTICLE SIZE |
0.25 - 1mm |
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