【CAS】584-08-7 Molecular formula: K2CO3 Relative molecular mass:138.2066
構造式：
一．
At room temperature, it is a white crystalline powder or particle, odorless, hygroscopic, soluble in water (solubility 111g/100mL at 25℃), insoluble in alcohols, with a density of approximately 2.428g/cm³, and a melting point of 891℃.
二．
| パラメータ | Food-Grade (FCC) |
| Assay (K₂CO₃) | ≥ 99.0%以上 (w/w) |
| 外観 | White granules/powder |
| 乾燥減量（105） | ≤ 0.5% (w/w) |
| 塩化物（Cl-として） | ≤ 0.003% (w/w) |
| 硫酸塩（SO₄-として） | ≤ 0.005% (w/w) |
| 重金属（鉛として） | ≤ 10 ppm |
| ヒ素（As） | ≤ 3 ppm |
| 鉄（Fe） | ≤ 10 ppm |
| ナトリウム（Na） | ≤ 0.1% (w/w) |
| 不溶性物質 | ≤ 0.02% (w/w) |
| pH (5% Solution) | 11.0–12.0 |
三．
Potassium carbonate is mainly used as an additive in instant noodles and carbonated beverages, playing a role in leavening and preservation.
四．
Packaging: Inner liner is polyethylene plastic bag, outer cover is plastic woven bag. Net weight of each bag is 25 kilograms.
Storage and Transportation: It should be stored in a dry, ventilated and clean warehouse to prevent rain and moisture. It should be isolated from toxic substances for stacking. The shelf life of this product is twelve months.
