性状：在空气中易风化，溶于水，不溶于醇，水溶液呈强碱性。

备注: 以上描述，仅作参考，并不表示您收到的产品，与此项描述完全相符，产品的出厂标准，请参见质量标准。

质量标准：

GB/T 9856-88
项目Item                                             分析纯 (AR)           化学纯(CP)
含量(Na₂CO₃.10H₂O)Assay,%                    ≥  99.0                  99.0
澄清度试验Clarity                                   合格                   合格
水不溶物Insoluble matter in water,%         ≤  0.005                0.01
氯化物(Cl)Chloride,%                             ≤  0.001                0.003
总硫量(以SO₄计)Total Sulfate,%               ≤  0.003                0.005
磷酸盐(PO₄)Phosphate,%                         ≤  0.0005               0.002
硅酸盐(SiO₃)Silicate,%                           ≤  0.001                0.005
总氮量(N)Total nitrogen,%                     ≤  0.0005                0.001
镁(Mg)Magnesium,%                             ≤  0.0003                 0.002
铝(Al)Aluminum,%                               ≤  0.0005                 0.003
钾(K)Potassium,%                                ≤  0.003                   0.01
钙(Ca)Calcium,%                                 ≤  0.003                  0.008
铁(Fe)Iron,%                                      ≤  0.0002                 0.0003
重金属(以Pb计)Heavy metals,%             ≤  0.0002                 0.0005

ACS级
项目名称　                                               ACS Grade
含量(Na₂CO₃·H₂O)Assay                              ≥99.5%
干燥失重Loss on drying                              13-15%
水不溶物Insoluble matter                            ≤0.01%
氯化物(Cl)Chloride                                    ≤0.001%
磷酸盐(PO₄)Phosphate                                 ≤5ppm
硅酸盐（以SiO₂计)Silica                            ≤0.005%
含硫化合物(以SO₄计)Sulfur compounds     ≤0.004%
重金属(以Pb计)Heavy metals                      ≤5ppm
铁(Fe)Iron                                                 ≤5ppm
钙(Ca)Calcium                                           ≤0.03%
镁(Mg)Magnesium                                       ≤0.005%
钾(K)Potassium                                           ≤0.005%

99.99% metals basis:

外观Appearance                                   White Crystals
X-射线衍射分析X-Ray Diffraction           Conforms to Structure
纯度Purity                                          ≥99.99% Based on Trace Metals Impurities of ICP
滴定纯度Titration by HCL                      98.5 - 101.5 %
ICP:                                                   Confirms Sodium Component Confirmed
总痕量金属杂质total metallic impurities   ≤100ppm by ICP Atomic emission

99.997% metals basis:

外观Appearance                                     White Crystals
X-射线衍射分析X-Ray Diffraction             Conforms to Structure
纯度Purity                                            ≥99.997% Based on Trace Metals Impurities of ICP
滴定纯度Titration by HCL                        98.5 - 101.5 %
ICP:                                                    Confirms Sodium Component Confirmed
总痕量金属杂质total metallic impurities    ≤30ppm by ICP Atomic emission
(Al、As、Ca、Cd、Ce、Cr、Cu、Fe、Si、Ti、Tl、Zr)

贮存：密封避光阴凉处保存，夏季防熔化结块。

用途：点滴分析测定锰，铊及碳酸盐，农用培养基。

联合国编号

Risk： R36-

Safety : S22 - S26-

Hazard : Xi -