26006-71-3

• 常用中文名：二水碲酸钠(VI)
• 常用英文名：Sodium tellurate(VI) dihydrate
• CAS号：26006-71-3
• 分子式：H₄Na₂O₆Te
• 分子量：273.60800
• 发布时间：2018-03-14 08:00:00
• 更新时间：2024-01-03 09:15:58

• 1.用作分析试剂，药物制造。

名称

• 中文名: 二水碲酸钠
• 英文名: disodium,tellurate,dihydrate
• 中文别名: 碲酸钠
• 英文别名: dipotassium dihydrate tellurate; Sodium tellurate,dihydrate; disodium tellurate dihydrate

物化性质

• 分子式: H₄Na₂O₆Te
• 分子量: 273.60800
• 精确质量: 275.88700
• PSA: 98.72000
• 储存条件:

  放入紧密的贮藏器内，储存在阴凉，干燥的地方

• 稳定性:

  1.稳定

  2.避免接触强氧化剂。可溶于水.

  3.有毒。

• 计算化学:

  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

• 更多:

  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。

MSDS

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 IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL) Title Compound26006-71-3100%0.1mg/m30.1mg/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 andIf 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

毒性和生态

毒理学数据: 急性毒性：小鼠腹腔LC50： 74mg/kg 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

安全

• 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

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：