二水碲酸钠

二水碲酸钠 基本信息
CAS号 26006-71-3 分子式 H2O4Te.2H2O.2Na
分子量 275.49972 精确质量  277.90221
PSA  98.72000 LogP  -0.98460

基本信息 展开↓

CAS号:
26006-71-3
分子式:
H2O4Te.2H2O.2Na
分子量:
275.49972
中文名称:
二水碲酸钠
英文名称:
Telluric acid (H2TeO4), disodium salt, dihydrate (8CI,9CI)
中文别名:
二水碲酸钠;
碲酸钠
英文别名:
Telluric acid (H2TeO4), disodium salt, dihydrate (8CI,9CI)
精确分子量/精确质量:
277.90221
极性分子表面积/PSA:
98.72000
油水分配系数/LogP:

LogP值指的是某物质在正辛醇/水两相体系中的分配系数的对数值,反映了物质在油水两相中的分配情况。其中、LogP值越大,说明该物质越亲油;反之,LogP值越小,则说明该物质越亲水。
PubChem:
WE3920000

生产制备方法及用途展开↓

制备方法


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:

合成制备方法


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:

用途简介


用作分析试剂,药物制造。

用途


1.用作分析试剂,药物制造。

物化性质展开↓

存储条件/存储方法:

放入紧密的贮藏器内,储存在阴凉,干燥的地方

稳定性相关:

1.稳定

2.避免接触强氧化剂。可溶于水.

3.有毒。

其它信息:

1.       性状:白色粉末或无色六方晶系结晶。

2.       密度(g/mL,25/4℃):未确定

3.       相对蒸汽密度(g/mL,空气=1):未确定

4.       熔点(ºC):225

5.       沸点(ºC,常压):未确定

6.       沸点(ºC,5.2kPa):未确定

7.       折射率:1.4790

8.       闪点(ºC):未确定

9.       比旋光度(º):未确定

10.    自燃点或引燃温度(ºC):未确定

11.    蒸气压(kpa,20ºC):未确定

12.    饱和蒸气压(kPa,60ºC):未确定

13.    燃烧热(KJ/mol):未确定

14.    临界温度(ºC):未确定

15.    临界压力(KPa):未确定

16.    油水(辛醇/水)分配系数的对数值:未确定

17.    爆炸上限(%,V/V):未确定

18.    爆炸下限(%,V/V):未确定

19.    溶解性:溶于130份冷水、50份沸水。

安全信息展开↓

安全说明:
S22-S26-S27-S45-S36-S37-S39
安全标志:
S22:不要吸入粉尘。
S26:万一接触眼睛,立即使用大量清水冲洗并送医诊治。
S27:立刻除去所有污染衣物。
S45:出现意外或者感到不适,立刻到医生那里寻求帮助(最好带去产品容器标签)。
:

化学图谱

  1. 二水碲酸钠红外图谱(IR1)

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毒理性展开↓

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
毒理学数据:

急性毒性:小鼠腹腔LC50: 74mg/kg

MSDS 展开↓


Section 1: Product Identification
   Chemical Name:       Sodium tellurate (VI) dihydrate, 99.5%    
   CAS Registry Number:       26006-71-3    
   Formula:       Na2TeO4.2H2O    
   EINECS Number:       233-259-5    
   Chemical Family:       inorganic compound    
   Synonym:       None    

Section 2: Composition and Information on Ingredients
   Ingredient       CAS Number       Percent       ACGIH (TWA)       OSHA (PEL)    
   Title Compound       26006-71-3       100%       0.1mg/m3       0.1mg/m3    

Section 3: Hazards Identification
   Emergency Overview:       Irritating to eyes, skin and respiratory tract. May be harmful if swallowed    
   Primary Routes of Exposure:       Ingestion    
   Eye Contact:       Causes slight to mild irritation of the eyes.    
   Skin Contact:       Causes slight to mild irritation of the skin.    
   Inhalation:       Irritating to the nose, mucous membranes and respiratory tract.    
   Ingestion:       No specific information on the physiological effects of ingestion.    
   Acute Health Affects:       Irritating to skin, eyes and respiratory tract.    
   Chronic Health Affects:       No information available on long-term chronic effects.    
   NTP:       No    
   IARC:       No    
   OSHA:       No    

SECTION 4: First Aid Measures
   Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
   Eye Exposure:
   assistance in keeping their eye lids open. Get immediate medical attention.
   Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
   Skin Exposure:
   irritation persists.
   Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
   Inhalation:
   in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
   Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
   Ingestion:
   vomiting only if directed by medical personnel.

SECTION 5: Fire Fighting Measures
   Flash Point:       no data    
   Autoignition Temperature:       none    
   Explosion Limits:       none    
   Extinguishing Medium:       carbon dioxide, foam or dry powder    
   If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure
   Special Fire Fighting Procedures:
   self-contained breathing apparatus and full protective clothing.
   Hazardous Combustion and       If involved in a fire this material may emit irritating and toxic fumes.    
   Decomposion Products:
   Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.

SECTION 6: Accidental Release Measures
   Spill and Leak Procedures:       Small spills can be mixed with vermiculite or sodium carbonate and swept up.    

SECTION 7: Handling and Storage
   Handling and Storage:       Store in a tightly sealed container. Keep away from heat and direct sunlight.    

SECTION 8: Exposure Controls and Personal Protection
   Eye Protection:       Always wear approved safety glasses when handling a chemical substance in the laboratory.    
   Skin Protection:       Wear protective clothing and gloves.    
   Ventilation:       If possible, handle the material in an efficient fume hood.    
   If ventilation is not available, a respirator should be worn. The use of respirators requires a Respiratory
   Respirator:
   Protection Program to be in compliance with 29 CFR 1910.134.
   Ventilation:       If possible, handle the material in an efficient fume hood.    
   Additional Protection:       No additional protection required.    

SECTION 9: Physical and Chemical Properties
   Color and Form:       white pwdr.    
   Molecular Weight:       237.58 (273.61)    
   Melting Point:       no data    
   Boiling Point:       no data    
   Vapor Pressure:       no data    
   Specific Gravity:       no data    
   Odor:       none    
   Solubility in Water:       soluble    

SECTION 10: Stability and Reactivity
   Stability:       air and moisture-stable solid    
   Hazardous Polymerization:       no hazardous polymerization    
   Conditions to Avoid:       none    
   Incompatibility:       none    
   Decomposition Products:       tellurium oxide and sodium salts    

SECTION 11: Toxicological Information
   RTECS Data:       Intraperitoneal (mouse): LD50; 74mg/kg.    
   Carcinogenic Effects:       No data available    
   Mutagenic Effects:       No data available    
   Tetratogenic Effects:       No data available    

SECTION 12: Ecological Information
   Ecological Information:       No information available    

SECTION 13: Disposal Considerations
   Disposal:       Dispose of according to local, state and federal regulations.    

SECTION 14: Transportation
   Shipping Name (CFR):       Non-hazardous    
   Hazard Class (CFR):       NA    
   Additional Hazard Class (CFR):       NA    
   Packaging Group (CFR):       NA    
   UN ID Number (CFR):       NA    
   Shipping Name (IATA):       Non-hazardous    
   Hazard Class (IATA):       NA    
   Additional Hazard Class (IATA):       NA    
   Packaging Group (IATA):       NA    
   UN ID Number (IATA):       NA    

SECTION 15: Regulatory Information
   TSCA:       Not listed in the TSCA inventory.    
   SARA (Title 313):       Title compound not listed.    
   Second Ingredient:       none    


SECTION 16 - ADDITIONAL INFORMATION
N/A

分子结构与计算化学数据展开↓

计算化学数据


1.疏水参数计算参考值(XlogP):无

2.氢键供体数量:2

3.氢键受体数量:6

4.可旋转化学键数量:0

5.互变异构体数量:无

6.拓扑分子极性表面积82.3

7.重原子数量:9

8.表面电荷:0

9.复杂度:62.2

10.同位素原子数量:0

11.确定原子立构中心数量:0

12.不确定原子立构中心数量:0

13.确定化学键立构中心数量:0

14.不确定化学键立构中心数量:0

15.共价键单元数量:5

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