无色结晶，一般商品为白色、灰白色或稍带黄色结晶，昧苦而涩，潮解性强。相对密度1.835。易溶于水，其水溶液呈中性或微碱性，具有腐蚀性。溶于醇，不溶于醚。加热至260℃时脱水变成无水物。其他化学性质与无水氯化钙相似。
熔点  30 °C 
密度  1.71 g/mL at 25 °C(lit.) 
蒸气压 0.01 mm Hg ( 20 °C)

品级Grade                                           化学纯   
                                                              (CP)
含量(CaCl2·2H2O)，%               99.0～103.0  
钡(Ba)                                                 合格  
碱度(以OH-计)/(mmol/g)               ≤0.008  
硫酸盐(SO4)，%                           ≤0.01  
硝酸盐(NO3)，%                           ≤0.005  
磷酸盐(PO4)，%                           ≤0.002  
重金属(以Pb计)，%                        ≤0.001  
铁(Fe)，%                                       ≤0.002  
铵(NH4)，%                                    ≤0.005  
不溶物及氢氧化铵沉淀物，%         ≤0.015  
镁及碱金属(以硫酸盐计)，%            ≤0.6  

 
品级Grade                                           分析纯   
                                                                (AR) 
含量(CaCl2·2H2O)，%                  99.0～103.0  
钡(Ba)                                                   合格  
碱度(以OH-计)/(mmol/g)                 ≤0.004  
硫酸盐(SO4)，%                         ≤0.01  
硝酸盐(NO3)，%                         ≤0.005  
磷酸盐(PO4)，%                         ≤0.002  
重金属(以Pb计)，%                      ≤0.0005  
铁(Fe)，%                              ≤0.001  
铵(NH4)，%                             ≤0.005  
不溶物及氢氧化铵沉淀物，%              ≤0.01  
镁及碱金属(以硫酸盐计)，%              ≤0.5  


ACS级
项目名称Item                                 ACS Grade
含量(CaCl2·2H2O)Assay                        99.0-105.0%
pH(5%溶液,25.0℃)pH                           4.5-8.5
水不溶物Insoluble matter                      ≤0.01%
易氧化物质(以NO3计)Oxidizing substances       ≤0.003%
硫酸盐(SO4)Sulfate                            ≤0.01%
铵(NH4)Ammonium                               ≤0.01%
钡(Ba)Barium(Ba)                              ≤0.005%
重金属(以Pb计)Heavy metals(as Pb)             ≤5ppm
铁(Fe)Iron(Fe)                                ≤0.001%
镁(Mg)Magnesium(Mg)                           ≤0.005%
钾(K)Potassium(K)                             ≤0.01%
钠(Na)Sodium(Na)                              ≤0.02%
锶(Sr)Strontium(Sr)                           ≤0.1%


品级Grade                      用于细胞、昆虫细胞植物细胞培养, ≥99.0%   
      (for cell culture,insect cell culture and plant cell culture ≥99.0%) 
外观appearance                                white powder 
水溶性solubility                              clear colorless solution at 294mg/ml in water 
干燥损失loss on drying                        23-25.5% 
纯度purity by titration                       ≥ 99.0% 
细胞培养测试cell culture test                 pass 
昆虫细胞培养测试insect cell test              pass


品级Grade                               分子生物学级，≥99 %   
                                    (for molecular biology, ≥99%) 
外观Appearance                           White Powder
水溶性Solubility                         Colorless，Clear，294 mg/mL, H2O
干燥损失Loss on Drying                   23.0- 25.5 %
纯度Purity Titration by EDTA             ≥99 %
DNA酶DNAse Detection                     None Detected
内切酶Nickase                            None Detected
RNA酶RNAse Detection                     None Detected
蛋白酶Protease by FITC-Casein            None Detected


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
ICP Major Analysis                      Confirms Calcium component
总痕量金属杂质total metallic impurities   ≤200ppm by ICP Atomic emission

危险品标志     Xi,Xn 
    危险类别码      36-36/37/38-22 
    安全说明         26-24-22-36 
    海关编码        28272000 
    WGK Germany  1 
    RTECS          EV9830000 
    F                       3 

在食品工业中用作钙质强化剂、螯合剂、固化剂和冷冻用致冷剂。 
用作冷冻剂，也用于食品加工、制药等 
作凝固剂，我国规定可在豆制品中按生产需要适量使用。 
 
密封保存