氢氧化钙

氢氧化钙用途

【用途一】
用于制漂白粉、硬水软化剂和自来水消毒澄清剂及建筑工业等
【用途二】
用于制漂白粉、硬水软化剂、脱毛剂、消毒剂、止酸剂、收敛剂和各种钙盐
【用途三】
用作分析试剂、二氧化碳吸收剂，也用于有机合成
【用途四】
用于制药。可作橡胶、石油工业添加剂，用于润滑油中可防止结焦、油泥沉积、中和防腐。还可作硬水软化剂、消毒剂、制酸剂等。
【用途五】
检验二氧化碳,气体吸收。皮革脱毛,杀虫,水处理。

氢氧化钙名称

[ CAS 号 ]:
1305-62-0

[ 中文名 ]:
氢氧化钙

[ 英文名 ]:
calcium dihydroxide

[中文别名 ]:

熟石灰

[英文别名 ]:

slaked lime
calcium hydroxide
EINECS 215-137-3
calcium hydroxide (Ca(OH)2)
hydrated lime
MFCD00010901
calcium,dihydroxide
Calcium hydroxide,(trace metal basis)

氢氧化钙物理化学性质

[ 密度 ]:
2.24 g/mL at 25 °C(lit.)

[ 沸点 ]:
2850 °C

[ 熔点 ]:
580 °C

[ 分子式 ]:
CaH₂O₂

[ 分子量 ]:
74.09270

[ 精确质量 ]:
73.96810

[ PSA ]:
40.46000

[ 外观性状 ]:
白色粉末或无色,略哑色,水状的溶液

[ 储存条件 ]:
库房低温通风干燥

[ 稳定性 ]:
Stable. Incompatible with strong acids.

[ 水溶解性 ]:
1.65 g/L (20 ºC)

氢氧化钙MSDS

氢氧化钙毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: EW2800000

CHEMICAL NAME :: Calcium hydroxide

CAS REGISTRY NUMBER :: 1305-62-0

LAST UPDATED :: 199712

DATA ITEMS CITED :: 27

MOLECULAR FORMULA :: Ca-H2-O2

MOLECULAR WEIGHT :: 74.10

WISWESSER LINE NOTATION :: CA Q2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 7340 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 7300 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :: Cytogenetic analysis

TEST SYSTEM :: Rodent - rat Ascites tumor

REFERENCE :: GANNA2 Gann. Japanese Journal of Cancer Research. (Tokyo, Japan) V.1-75, 1907-84. For publisher information, see JJCREP. Volume(issue)/page/year: 54,155,1963 *** REVIEWS *** ACGIH TLV-TWA 5 mg/m3 DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 OSHA PEL (Gen Indu):8H TWA 15 mg/m3, total dust CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Gen Indu):8H TWA 5 mg/m3, respirable fraction CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 15 mg/m3, total dust CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Construc):8H TWA 5 mg/m3, respirable fraction CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 15 mg/m3, total dust CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Shipyard):8H TWA 5 mg/m3, respirable fraction CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 5 mg/m3 JAN 1993 OEL-BELGIUM:TWA 5 mg/m3 JAN 1993 OEL-DENMARK:TWA 5 mg/m3 JAN 1993 OEL-FINLAND:TWA 5 mg/m3 JAN 1993 OEL-FRANCE:TWA 5 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 5 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 5 mg/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO CALCIUM HYDROXIDE-air:10H TWA 5 mg/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 15743 No. of Facilities: 15315 (estimated) No. of Industries: 187 No. of Occupations: 115 No. of Employees: 226292 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 15743 No. of Facilities: 20988 (estimated) No. of Industries: 167 No. of Occupations: 131 No. of Employees: 360007 (estimated) No. of Female Employees: 39330 (estimated)

氢氧化钙安全信息

[ 符号 ]:

GHS05, GHS07

[ 信号词 ]:
Danger

[ 危害声明 ]:
H315-H318-H335

[ 警示性声明 ]:
P261-P280-P305 + P351 + P338

[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves

[ 危害码 (欧洲) ]:
Xi:Irritant

[ 风险声明 (欧洲) ]:
R41

[ 安全声明 (欧洲) ]:
S26-S39

[ 危险品运输编码 ]:
3262

[ WGK德国 ]:
1

[ RTECS号 ]:
EW2800000

[ 包装等级 ]:
III

[ 危险类别 ]:
8

[ 海关编码 ]:
2825909000

氢氧化钙合成路线

氢氧化钙上下游产品

氢氧化钙上游产品

氢氧化钙下游产品

氢氧化钙制备

1.石灰消化法将石灰石在煅烧成氧化钙后，经精选与水按1∶(3～3.5)的比例消化，生成氢氧化钙料液经净化分离除渣，再经离心脱水，于150～300 ℃下干燥，再筛选(120目以上)即为氢氧化钙成品。

2.将碱金属的氢氧化物溶液与钙盐的水溶液作用可得氢氧化钙。将46g四水硝酸钙溶于经过煮沸排除气体的500mL的蒸馏水中，冷却至0℃，边振荡边分多次加入1mol/L的氢氧化钾溶液（不含CO2），滴加过程中保持溶液为0℃，过滤分离析出的Ca(OH)2沉淀，用12L水分若干次倾析洗涤，吸滤沉淀在硫酸（相对密度1.355）干燥器中真空干燥20h可得Ca(OH)2。

3.用扩散法来制备氢氧化钙。

首先配制两种溶液：一为30g重结晶的CaCl2·6H2O溶于50mL水中；一为12g NaOH溶于50mL水并滴加少量Ba(OH)2的沉淀碳酸盐。将两种溶液分别装满两个50mL的烧杯中。将两个烧杯小心地放在同一个容器中，烧杯距离容器的上缘2cm，盖好容器盖，静置4周后有1cm左右的针状结晶生长出来，收集过滤，快速水洗，再依次用稀盐酸、水、乙醇、乙醚洗涤，最后在短时间内于110℃进行干燥。

4.采用石灰消化法。将石灰石煅烧成氧化钙后，经精选与水按1∶（3～3.5）的比例消化，生成氢氧化钙料液经净化分离除渣，再经离心脱水，于150～300℃下干燥，筛选即得成品。

5.．将试剂氯化钙溶于水中，制得25%的水溶液，加热至80℃，然后分次加入滤过的30%的氢氧化钠溶液（可超过理论量30%），反应得到氢氧化钙：

所得浆状混合物经抽滤后洗涤，先用0.1%的氢氧化钠水溶液洗去大量Cl^-离子，然后用蒸馏水洗至Cl^-合格，洗过的沉淀在8880 ～100 ℃下干燥。

氢氧化钙海关

[ 海关编码 ]: 2825909000

氢氧化钙文献

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