Potassium carbonate crystal

MDL：
MFCD00149925

Molecular Formula：
K2CO3•3/2H2O

Molecular Weight：
165.23

Product order：

Name	Specifications	Packing	Price	Delivery
Potassium carbonate crystal	AR	500g	RMB 49.5	Consulting service
Potassium carbonate crystal	CP	500g	RMB 41.8	Consulting service
Potassium carbonate crystal	GR	500g	RMB 22	Consulting service
Potassium carbonate crystal	SP	25g	RMB 60.5	Consulting service
Potassium carbonate crystal	4N	25g	RMB 22	Consulting service
Potassium carbonate crystal	ACS	500g	RMB 93.5	Consulting service

Character：
无色结晶或白色颗粒。有吸湿性。当含有充分水分后(16.36%)不吸湿。易溶于水，几乎不溶于乙醇。水溶液呈强碱性。有刺激性。
密度:2.043

Quality Standard：
Q/(GH)SJ476-92
项目ltem                                 分析纯　　　　　化学纯
　　　　　　　　　　　　　　　　　　　    (AR)            (CP)
含量(K2CO3•3/2H2O)Assay,%                 99.0～100.2　　 98.0～100.5
水不溶物lnsoluble matter in water,%     ≤0.005           0.02
氯化物及氯酸盐(以Cl计)Chloride  and
chlotate,%                              ≤0.001           0.005
硫化合物(以SO4计)Sulfur compounds,%     ≤0.002           0.005
氮化合物(N)Nitrogen compounds,%         ≤0.005           0.005
磷酸盐(PO4)Phosphate,%                  ≤0.003           0.01
硅酸盐及氨沉淀物Silicate and substan-
ces precipitatde by ammonia solution,%  ≤0.005           0.003
钙及镁(Ca+Mg)Calcium and magnesium,%    ≤0.01            0.05
铁(Fe)Iron,%                            ≤0.0005          0.001
砷(As)Arsenic,%                         ≤0.00003         0.00003
重金属(以Pb计)Heavy metals,%            ≤0.0003          0.0003

ACS级
项目名称　                             ACS Grade
含量(K2CO3•3/2H2O)Assay                 98.5-101.0%
干燥失重(285℃)Loss on heating at 285℃ 14.0-16.5%
水不溶物 Insoluble matter               ≤0.01%
氯化物(Cl)Chloride                      ≤0.003%
磷酸盐(PO4)Phosphate                    ≤0.001%
二氧化硅(以SiO2计)Silica                ≤0.005%
硫化合物(以SO4计)Sulfur compounds       ≤0.004%
重金属(以Pb计)Heavy metals              ≤5ppm
铁(Fe)Iron                              ≤5ppm
钙(Ca)Calcium                           ≤0.005%
镁(Mg)Magnesium                         ≤0.002%
钠(Na)Sodium                            ≤0.02%

Storage：
密封保存。
用作分析试剂。钾盐制备。