10294-66-3

• 常用中文名：硫代硫酸钾
• 常用英文名：Potassium thiosulfate
• CAS号：10294-66-3
• 分子式：K₂O₃S₂
• 分子量：190.325
• 相关类别： 无机化工 无机盐 金属硫化物及硫酸盐
• 发布时间：2018-07-29 19:02:18
• 更新时间：2024-01-08 13:53:08
• 【用途一】
  用作分析试剂和还原剂，也用于制药工业

名称

• 中文名: 硫代硫酸钾
• 英文名: potassium thiosulfate
• 英文别名: potassium thiosulphate; PotassiumThiosulfateK2S2O3; MFCD00036292; Potassium thiosulfate solution; thiosulfuricacid(h2s2o3),dipotassiumsalt; Thiosulfuricacid,dipotassiumsalt; Potassium thiosulfat; EINECS 233-666-8; Dipotassium sulfurothioate; POTASSIUM HYPOSULFITE

物化性质

• 密度: 1.484 g/mL at 25 °C
• 分子式: K₂O₃S₂
• 分子量: 190.325
• 精确质量: 189.856293
• PSA: 103.66000
• LogP: 0.50980
• 外观性状: 白色结晶粉末
• 储存条件: 室温
• 稳定性: Stable. Incompatible with strong acids, strong oxidizing agents.
• 水溶解性: 不同温度(℃)时每100毫升水中的溶解克数: 96g/0℃;155g/20℃;175g/30℃;205g/40℃ 238g/60℃;293g/80℃;312g/90℃
• 计算化学:

  1.疏水参数计算参考值（XlogP）:无

  2.氢键供体数量:0

  3.氢键受体数量:4

  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104

  7.重原子数量:7

  8.表面电荷:0

  9.复杂度:82.6

  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:3

• 更多:

  1.性状：白色极易潮解结晶。

  2. 相对密度：2.59

  3..溶解性：易溶于水并吸热，不溶于乙醇，具有还原性。

MSDS

Section 1. Chemical Product and Company Identification Potassium Thiosulfate Common Name/ Trade Name Manufacturer Commercial Name(s) Synonym Chemical Name Chemical Family Potassium Thiosulfate Section 4. First Aid Measures Eye ContactCheck for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Cold water may be used. Get medical attention. Skin ContactIn case of contact, immediately flush skin with plenty of water. Cover the irritated skin with an emollient. Remove contaminated clothing and shoes. Cold water may be used.Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention. Serious Skin ContactWash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek medical attention. InhalationIf inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention. Serious InhalationNot available. IngestionDo NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. If large quantities of this material are swallowed, call a physician immediately. Loosen tight clothing such as a collar, tie, belt or waistband. Serious IngestionNot available. Section 5. Fire and Explosion Data Flammability of the Product May be combustible at high temperature. Auto-Ignition Temperature Not available. Flash PointsNot available. Flammable LimitsNot available. Products of CombustionNot available. Fire Hazards in Presence of Slightly flammable to flammable in presence of heat. Various Substances Explosion Hazards in Presence Risks of explosion of the product in presence of mechanical impact: Not available. of Various SubstancesRisks of explosion of the product in presence of static discharge: Not available. Fire Fighting MediaSMALL FIRE: Use DRY chemical powder. and InstructionsLARGE FIRE: Use water spray, fog or foam. Do not use water jet. Special Remarks onAs with most organic solids, fire is possible at elevated temperatures Fire Hazards Special Remarks on Explosion Not available. Hazards Section 6. Accidental Release Measures Small SpillUse appropriate tools to put the spilled solid in a convenient waste disposal container. Finish cleaning by spreading water on the contaminated surface and dispose of according to local and regional authority requirements. Large SpillUse a shovel to put the material into a convenient waste disposal container. Finish cleaning by spreading water on the contaminated surface and allow to evacuate through the sanitary system. Potassium Thiosulfate Section 7. Handling and Storage PrecautionsKeep away from heat. Keep away from sources of ignition. Empty containers pose a fire risk, evaporate the residue under a fume hood. Ground all equipment containing material. Do not breathe dust. Wear suitable protective clothing. In case of insufficient ventilation, wear suitable respiratory equipment. If you feel unwell, seek medical attention and show the label when possible. Avoid contact with skin and eyes. Keep away from incompatibles such as oxidizing agents, acids. StorageKeep container tightly closed. Keep container in a cool, well-ventilated area. Section 8. Exposure Controls/Personal Protection Engineering ControlsUse process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to airborne contaminants below the exposure limit. Personal ProtectionSplash goggles. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent. Gloves. Personal Protection in Case of Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used a Large Spillto avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist BEFORE handling this product. Exposure LimitsNot available. Section 9. Physical and Chemical Properties Physical state and appearance Solid.OdorNot available. Not available. Taste Molecular Weight194.08 g/mole Not available. Color Not available. pH (1% soln/water) Boiling PointNot available. Not available. Melting Point Critical TemperatureNot available. Specific Gravity1.484 (Water = 1) Vapor PressureNot applicable. Vapor DensityNot available. Not available. Volatility Odor ThresholdNot available. Water/Oil Dist. Coeff.Not available. Ionicity (in Water)Not available. Dispersion PropertiesSee solubility in water. SolubilitySoluble in cold water. Section 10. Stability and Reactivity Data StabilityThe product is stable. Instability TemperatureNot available. Conditions of InstabilityExcess heat, incompatible materials Incompatibility with various Reactive with oxidizing agents, acids. substances Potassium Thiosulfate CorrosivityNot available. Special Remarks onNot available. Reactivity Special Remarks onNot available. Corrosivity PolymerizationWill not occur. Section 11. Toxicological Information Routes of EntryInhalation. Ingestion. Toxicity to AnimalsLD50: Not available. LC50: Not available. Chronic Effects on Humans Not available. Other Toxic Effects onHazardous in case of skin contact (irritant), of ingestion, of inhalation. Humans Special Remarks onNot available. Toxicity to Animals Special Remarks onNot available. Chronic Effects on Humans Special Remarks on otherNot available. Toxic Effects on Humans Section 12. Ecological Information Not available. Ecotoxicity BOD5 and CODNot available. Products of BiodegradationPossibly hazardous short term degradation products are not likely. However, long term degradation products may arise. Toxicity of the ProductsThe product itself and its products of degradation are not toxic. of Biodegradation Special Remarks on theNot available. Products of Biodegradation Section 13. Disposal Considerations Waste DisposalWaste must be disposed of in accordance with federal, state and local environmental control regulations. Section 14. Transport Information DOT ClassificationNot a DOT controlled material (United States). IdentificationNot applicable. Special Provisions forNot applicable. Transport Potassium Thiosulfate DOT (Pictograms) Section 15. Other Regulatory Information and Pictograms TSCA 8(b) inventory: Potassium Thiosulfate Federal and State Regulations CaliforniaCalifornia prop. 65: This product contains the following ingredients for which the State of California has found to cause cancer which would require a warning under the statute: No products were found. Proposition 65 Warnings California prop. 65: This product contains the following ingredients for which the State of California has found to cause birth defects which would require a warning under the statute: No products were found. Other RegulationsEINECS: This product is on the European Inventory of Existing Commercial Chemical Substances (EINECS No. 233-666-8). Canada: Listed on Canadian Domestic Substance List (DSL). China: Listed on National Inventory. Japan: Listed on National Inventory (ENCS). Korea: Listed on National Inventory (KECI). Philippines: Listed on National Inventory (PICCS). Australia: Listed on AICS. Other ClassificationsWHMIS (Canada) Not controlled under WHMIS (Canada). DSCL (EEC)R36/38- Irritating to eyes and skin.S26- In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37- Wear suitable gloves. Health Hazard HMIS (U.S.A.)2 National Fire Protection 1 Flammability 1 Association (U.S.A.) Fire Hazard 2 0 Reactivity Health Reactivity 0 Specific hazard Personal Protection E WHMIS (Canada) (Pictograms) DSCL (Europe) (Pictograms) TDG (Canada) (Pictograms) ADR (Europe) (Pictograms) Protective Equipment Gloves. Potassium Thiosulfate Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent. SECTION 16 - ADDITIONAL INFORMATION N/A

安全

• 符号: GHS07
• 信号词: Warning
• 危害声明: H315-H319
• 警示性声明: 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): 36/38
• 安全声明 (欧洲): S26-S36
• 危险品运输编码: NONH for all modes of transport

制备

先用碳酸钾溶液吸收二氧化硫成亚硫酸钾，然后再加入硫黄煮沸，经过滤、浓缩和结晶而得：