商品名：结晶碳酸钾

别 名：

英文名：Potassium carbonate crystal

产 地：湖南

Cas号：6381-79-9

MDL：MFCD00149925

Beilstein：

EINECS：209-529-3

分子结构：

分子式：K2CO3•3/2H2O

分子量：165.2300

备注：

性状：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

质量标准：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%



99.99% metals basis:

外观Appearance                          White Powder
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                              ≥99.99% Based on Trace Metals Impurities
总氮total nitrogen (N)                  ≤10 ppm  
氯chloride (Cl-):                       ≤10 ppm
磷酸phosphate (PO43-):                  ≤0.05 ppm
硅酸盐silicate (as SiO2):               ≤5 ppm
硫酸根sulfate (SO42-):                  ≤10 ppm
  Al:                                   ≤0.05 ppm
  As:                                   ≤0.01 ppm
  Ba:                                   ≤5 ppm
  Ca:                                   ≤0.5 ppm
  Cd:                                   ≤0.01 ppm
  Ce:                                   ≤0.01 ppm
  Co:                                   ≤0.01 ppm
  Cr:                                   ≤0.01 ppm
  Cu:                                   ≤0.01 ppm
  Eu:                                   ≤0.01 ppm
  Fe:                                   ≤0.05 ppm
  Hg:                                   ≤0.005 ppm
  La:                                   ≤0.01 ppm
  Li:                                   ≤0.2 ppm
  Mg:                                   ≤0.1 ppm
  Mn:                                   ≤0.05 ppm
  Na:                                   ≤10 ppm
  Ni:                                   ≤0.01 ppm
  Pb:                                   ≤0.01 ppm
  Sc:                                   ≤0.01 ppm
  Sm:                                   ≤0.01 ppm
  Sr:                                   ≤0.5 ppm
  Tl:                                   ≤0.01 ppm
  Y:                                    ≤0.01 ppm
  Yb:                                   ≤0.01 ppm
  Zn:                                   ≤0.05 ppm

存储：密封保存。

用途：用作分析试剂。钾盐制备。

联合编号：

RISK：

Safety：

Hazard：