| 质量指标 | Specification | GB 25588-2010 | FCC VII |
| 含量（K2CO3，以灼烧后计），w/% | Content（K2CO3）,w/% | ≥99.0 | 99.0-100.5 |
| 砷，mg/kg ≤ | Arsenic (as As) ,mg/kg ≤ | 2 | ———— |
| 硫化合物（K2SO4，以干基计），w/% ≤ | Sulfur compound(K2SO4，dried basis),w/% ≤ | 0.01 | ———— |
| 铁（Fe），w/% ≤ | Iron(Fe),w/% ≤ | 0.0010 | ———— |
| 铅，mg/kg ≤ | Pb,mg/kg ≤ | ———— | 2 |
| 重金属（以Pb计），mg/kg ≤ | Heavy Metals(As Pb),mg/kg ≤ | 10 | ———— |
| 水不溶物（以干基计），w/% ≤ | Insoluble substances(dried basis)，w/% ≤ | 0.02 | Pass Test |
| 氯化物(KCl，以干基计)，w/% ≤ | Chlorides(KCl，on the dried basis),w/% ≤ | 0.015 | ———— |
| 灼烧失量 ，w/% ≤ | Loss on Ignition,w/% ≤ | 0.60 | 1.0 (180℃,4h) |
1、Chemical Name: Potassium Carbonate
2、Molecular Formula: K2CO3
3、Molecular Weight: 138.21
4、CAS: 584-08-7
5、Character: It is anhydrous or contains 1.5 conbined water molecular. Anhydrous form occurs as white, granular powder and hydrated form occurs as white, translucent crystal or granule. It’s odorless and smells alkali. I air, it’s very deliquescent. It’s freely soluble in water and aqueous solution is alkaline. It’s insoluble in ethanol or ether.
6、Usage: It is used as pH regulator, nutrient, processing aid and spice. When added into noodle and wonton processing properly, it could endow the product with unique flavor, color and resilience.
7、Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
