白色无定形粉末或带灰色块状。对湿敏感。易从空气中吸收二氧化碳及水分。溶于水成氢氧化钙并产生大量热，溶于酸类、甘油和蔗糖溶液，不溶于醇。有腐蚀性。
熔点  2570 °C  
沸点  2850 °C(lit.) 
密度  3.3 g/mL at 25 °C(lit.) 
折射率  1.83 
闪点  2850°C    

项目Item　　　　　　　　　　             分析纯　　  化学纯
                                                                         (AR)      (CP)
含量[CaO(灼烧后)]Assay,%　　　          ≥ 98.0       97.0
澄清度试验Clarty                                         合格       合格  
乙酸不溶物lnsoluble in acetic acid,%    ≤ 0.05       0.1
灼烧失重Ignition residue,%                         ≤  2          5     
氯化物(Cl)Chloride,%                                   ≤ 0.003      0.01
硫酸盐(SO4)Sulfate,%                                  ≤ 0.1        0.25
硝酸盐(NO3)Nitrate,%                                  ≤ 0.004      0.01
铁(Fe)Iron,%                                                  ≤ 0.015      0.03
重金属(以Pb计)Heavy metals,%              ≤ 0.005      0.01
碱金属及镁(以MgO计)Alkali metals and
magnesium,%                                             ≤ 0.5        1.0
氨沉淀物Substances precipitated by
ammonia,%                                                ≤ 0.2        0.4



99.99% metals basis:


外观Appearance                          White Powder
X-射线衍射分析X-Ray Diffraction         Conforms to standard 
纯度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
ICP: Confirms Calcium Component Confirmed 
痕量金属分析total metallic impurities   ≤200ppm by ICP Atomic emission
(Na、K、Ni、Cs、Mg、Cu、Sr、Ba、Cd、Al、Fe、Co) 


nanopowder, <160 nm particle size (BET), 98%：


外观Appearance                               White to Off-White Powder
X-射线衍射分析X-Ray Diffraction              Conforms to standard 
X-射线荧光分析XRF Analysis:                  >98 wt%  
比表面积Specific Surface Area (BET): m2/g    Conforms to Structure 
平均粒径Average Particle Size (BET)          ≤160 nm

危险品标志     C,Xi 
    
危险类别码     34-41 
    
安全说明         26-36/37/39-45-25-39 
    
危险品运输编号  1910 
    
WGK Germany   1 
    
RTECS        EW3100000 
    
F                       10-21-34 
    
HazardClass    8 
    
PackingGroup III 

用途  用于药物载体。
用途  用于制造电石、纯碱、漂白粉等，用作建筑材料、耐火材料、干燥剂以及土壤改良剂和钙肥
用途  用作分析试剂、制造荧光粉的助熔剂
 
    
密封存储