二水碲酸钠(VI)
二水碲酸钠(VI)用途
1.用作分析试剂,药物制造。
二水碲酸钠(VI)名称
[ CAS 号 ]:
26006-71-3
[ 中文名 ]:
二水碲酸钠
[ 英文名 ]:
Sodium tellurate(VI) dihydrate
[中文别名 ]:
[英文别名 ]:
- dipotassium dihydrate tellurate
- Sodium tellurate,dihydrate
- disodium tellurate dihydrate
二水碲酸钠(VI)物理化学性质
[ 分子式 ]:
H4Na2O6Te
[ 分子量 ]:
273.60800
[ 精确质量 ]:
275.88700
[ PSA ]:
98.72000
[ 储存条件 ]:
室温
二水碲酸钠(VI)MSDS
二水碲酸钠(VI)毒性和生态
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- WE3920000
- CHEMICAL NAME :
- Sodium tellurate, dihydrate
- CAS REGISTRY NUMBER :
- 26006-71-3
- LAST UPDATED :
- 199712
- DATA ITEMS CITED :
- 20
- MOLECULAR FORMULA :
- O4-Te.2Na.2H2-O
- MOLECULAR WEIGHT :
- 273.62
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intraperitoneal
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 74 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- COREAF Comptes Rendus Hebdomadaires des Seances, Academie des Sciences. (Paris, France) V.1-261, 1835-1965. For publisher information, see CRASEV. Volume(issue)/page/year: 257,791,1963 *** REVIEWS *** ACGIH TLV-TWA 0.1 mg(Te)/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 *** OSHA PEL (Gen Indu):8H TWA 0.1 mg(Te)/m3 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 0.1 mg(Te)/m3 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 0.1 mg(Te)/m3 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 (Fed Cont):8H TWA 0.1 mg(Te)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 0.1 mg(Te)/m3 JAN 1993 OEL-BELGIUM:TWA 0.1 mg(Te)/m3 JAN 1993 OEL-DENMARK:TWA 0.1 mg(Te)/m3 JAN 1993 OEL-FINLAND:TWA 0.1 mg(Te)/m3;STEL 0.3 mg(Te)/m3 JAN 1993 OEL-FRANCE:TWA 0.1 mg(Te)/m3 JAN 1993 OEL-GERMANY:TWA 0.1 mg(Te)/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 0.1 mg(Te)/m3 JAN 1993 OEL-THE PHILIPPINES:TWA 0.1 mg(Te)/m3 JAN 1993 OEL-SWEDEN:TWA 0.1 mg(Te)/m3 JAN 1993 OEL-SWITZERLAND:TWA 0.1 mg(Te)/m3;STEL 0.5 mg(Te)/m3 JAN 1993 OEL-TURKEY:TWA 0.1 mg(Te)/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 0.1 mg(Te)/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV
二水碲酸钠(VI)安全信息
[ 危害码 (欧洲) ]:
T
[ 风险声明 (欧洲) ]:
R23/24/25;R36/37/38
[ 安全声明 (欧洲) ]:
S22-S26-S27-S45-S36-S37-S39
二水碲酸钠(VI)制备
1.按NaOH∶H6TeO6=2∶1的化学计量比,将氢氧化钠的浓溶液加入到煮沸的中等浓度的原碲酸溶液中,继续煮沸短时间后,让其自然冷却,即可析出Na2H4TeO6的微细结晶。吸滤,并用少量0℃的水洗涤,最后放入装有无水氯化钙的干燥器中干燥。
2.用热氢氧化钠溶液与碲酸水溶液作用,冷却后添加乙醇使析出二水合碲酸钠:
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