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Calcium hydroxide

Cas:
1305-62-0
Molecular Structure:
MDL:
--MFCD00010901
Molecular Formula:
Ca(OH)2
Molecular Weight:
74.09
Alias:
熟石灰Calcium hydrate Lime hydrate Caustic lime
Product order:
Name Specifications Packing Price Delivery
Calcium hydroxide USP, EP, BP, JP级 500g RMB 396 Consulting service
Calcium hydroxide ACS 500g RMB 59.4 Consulting service
Calcium hydroxide CP 500g RMB 35.2 Consulting service
Calcium hydroxide AR 500g RMB 38.5 Consulting service
Character:
软性白色颗粒或粉末。微有苦碱味。易吸收空气中二氧化碳生成碳酸钙,灼热失去水成氧化钙。在25℃时饱和水溶液pH为12.4。能溶于甘油、蔗糖溶液和氯化铵溶液,溶于酸时能产生大量热,微溶于水。有腐蚀性。半数致死量(大鼠,经口)7.34g/kg。
密度:2.08-2.34
熔点:580℃
Quality Standard:
 
   项目ltem                               分析纯    化学纯
                                    (AR)          (CP)
含量[Ca(OH)2]Assay,%                                   ≥95.0          93.0
盐酸不溶物Insoluble in hydrochl-oride acid,%           ≤0.05          0.1
氨水中沉淀物Substances precipita-
ted from ammonia solution,%                            ≤0.25          0.5
氯化物(Cl)Chloride,%                                   ≤0.01          0.02
硫化合物(SO4)Sulfur compounds,%                        ≤0.2           0.3
铁(Fe)lron,%                                           ≤0.01          0.02
镁盐及碱金属(以MgO计)Mafnesium
and alkali metals,%                                    ≤0.5           0.75
重金属(以Pb计)Heavy metals,%                           ≤0.002         0.003


ACS级
项目名称Item                                          ACS Grade
含量[Ca(OH)2]Assay                                     ≥95%
含量[CaCO3]Assay                                       ≤3.0%
稀盐酸不溶物Insoluble in dilute hydrochloric acid      ≤0.03%
氯化物(Cl)Chloride(Cl)                                 ≤0.03%
含硫化合物(以SO4计)Sulfur compounds                    ≤0.1%
重金属(以Pb计)Heavy metals(as Pb)                      ≤0.003%
铁(Fe)Iron(Fe)                                         ≤0.05%
镁(Mg)Magnesium(Mg)                                    ≤0.5%
钾(K)Potassium(K)                                      ≤0.05%
钠(Na)Sodium(Na)                                       ≤0.05%
锶(Sr)Strontium(Sr)                                    ≤0.05%

USP, EP, BP, JP级
ASSAY 95.0 - 100.5 % 
ACID-INSOLUBLE SUBSTANCES -- 0.5 % 
CARBONATE TO PASS TEST 
HEAVY METALS -- 20 ?G/G 
ARSENIC (As) -- 4 PPM 
MAGNESIUM AND ALKALI SALTS -- < 4.0 % 
CHLORIDE (Cl) -- 330 PPM 
SULFATE -- 0.4 % 

Storage:
密封干燥保存。
用途  检验二氧化碳,气体吸收。皮革脱毛,杀虫,水处理。
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