10117-38-1

• 常用中文名：无水亚硫酸钾
• 常用英文名：Potassium sulfite
• CAS号：10117-38-1
• 分子式：K₂O₃S
• 分子量：158.260
• 相关类别： 无机化工 无机盐 金属硫化物及硫酸盐
• 发布时间：2018-02-20 08:00:00
• 更新时间：2024-01-03 15:49:19
• 【用途一】
  用作一般试剂，也用于照相业
  【用途二】
  防腐剂；抗氧化剂；漂白剂；防褐变剂。
  【用途三】
  分析用。

名称

• 中文名: 亚硫酸钾
• 英文名: Potassium Sulfite
• 英文别名: E225; Monopotassium sulfite; EINECS 233-321-1; Potassium sulfite; potassium sulphite; Potassium sulfide; Dipotassium sulfite; MFCD00011387

物化性质

• 分子式: K₂O₃S
• 分子量: 158.260
• 精确质量: 157.884232
• PSA: 82.40000
• 外观性状: 白色粉末或晶体
• 储存条件:

  密封阴凉干燥避光保存。

• 稳定性:

  白色立方结晶或熔块。在空气中易变色。极易吸湿。性不稳定，撞击或急热能引起爆炸。易溶于水，水溶液呈强碱性。有腐蚀性。

• 分子结构:

  1、摩尔折射率：无可用的

  2、摩尔体积（cm³/mol）：无可用的

  3、等张比容（90.2K）：无可用的

  4、表面张力（dyne/cm）：无可用的

  5、介电常数：无可用的

  6、极化率（10^-24cm³）：无可用的

  7、单一同位素质量：157.884228 Da

  8、标称质量：158 Da

  9、平均质量：158.2598 Da

• 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82.4

  7.重原子数量:6

  8.表面电荷:0

  9.复杂度:18.8

  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：白色无臭粗粉。

  2. 密度（g/mL,20℃）：1.74

  3. 相对蒸汽密度（g/mL,空气=1）：未确定

  4. 熔点（ºC）：912

  5. 沸点（ºC,常压）：未确定

  6. 沸点（ºC,5.2kPa）：未确定

  7. 折射率：未确定

  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：易溶于水(1g/3.5m1)。难溶于乙醇

MSDS

Section 1. Chemical Product and Company Identification Potassium sulfite Common Name/ Trade Name Manufacturer Commercial Name(s) Synonym Chemical Name Chemical Family Potassium sulfite 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 if irritation occurs. Skin ContactWash with soap and water. Cover the irritated skin with an emollient. Get medical attention if irritation develops. Cold water may be used. Serious Skin ContactNot available. 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 Non-flammable. Auto-Ignition Temperature Not applicable. Flash PointsNot applicable. Flammable LimitsNot applicable. Not available. Products of Combustion Fire Hazards in Presence of Not applicable. 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 MediaNot applicable. and Instructions Special Remarks onNot available. 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 Spill Use 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 sulfite Section 7. Handling and Storage PrecautionsDo not breathe dust. Keep away from incompatibles such as oxidizing agents. StorageKeep container tightly closed. Keep container in a cool, well-ventilated area. Air Sensitive 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 ProtectionSafety glasses. 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 appearanceSolid. (Powdered solid.Crystalline powder. OdorOdorless. Crystals solid.) TasteNot available. Molecular Weight158.26 g/mole White. Color pH (1% soln/water)Not available. Boiling PointNot available. Melting PointNot available. Critical TemperatureNot available. Not available. Specific Gravity Vapor PressureNot applicable. Not available. Vapor Density VolatilityNot available. Odor ThresholdNot available. Not available. Water/Oil Dist. Coeff. Ionicity (in Water)Not available. See solubility in water. Dispersion Properties SolubilitySoluble in cold water. Section 10. Stability and Reactivity Data StabilityThe product is stable. Not available. Instability Temperature Conditions of InstabilityIncompatible materials, air Incompatibility with variousReactive with oxidizing agents. substancesSlightly reactive to reactive with acids. CorrosivityNon-corrosive in presence of glass. Potassium sulfite Air sensitive. Oxidizes in air to sulfate. Special Remarks on Reactivity Special Remarks onNot available. Corrosivity PolymerizationWill not occur. Section 11. Toxicological Information Routes of EntryEye contact. Inhalation. Ingestion. Toxicity to AnimalsLD50: Not available. LC50: Not available. Chronic Effects on Humans Not available. Other Toxic Effects on Slightly hazardous in case of skin contact (irritant, sensitizer), of ingestion, of inhalation. Humans Special Remarks onNot available. Toxicity to Animals Special Remarks onNot available. Chronic Effects on Humans Special Remarks on otherPotential Health Effects: Toxic Effects on HumansSkin: May cause skin irritation. May cause contact dermatitis. Eyes: May cause eye irritation. May cause conjunctivitis in sensitive individuals. Inhalation: Can cause respiratory tract irritation. Inhalation can also trigger the onset of hypersensivity reactions, nasal pruritus(itiching) and rhinorrhea (runny nose in sensitized individuals. Ingestion: When ingested it can cause gastric irritation by liberation of sulfurous acid. Because of rapid oxidation to sulfate, sulfites are well tolerated until large doses are reached. Ingestion of large doses can cause nausea, vomiting, abdominal pain, violet colic and diarrhea. It may also cause circulatory disturbances, hypotension (low blood pressure), and may affect behavior/central nervous system (central nervous system stimulation followed by depression, seizures). In animals, hypotension, cyanosis, and cardiovascular collapse have been described following ingestion of lethal doses of sulfites. Some asthmatics are said to be dangerously sensitive to minute amounts of sulfites in foods. Symptoms of hypersensitivity are bronchoconstriction, swelling of the tongue, diffuculty swallowing, diaphoresis (sweating), flushing, urticaria (hives), tachycardia (rapid heart beat), hypotension, and anaphylaxis. Section 12. Ecological Information EcotoxicityNot available. 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. Potassium sulfite Section 14. Transport Information DOT ClassificationNot a DOT controlled material (United States). IdentificationNot applicable. Not applicable. Special Provisions for Transport DOT (Pictograms) Section 15. Other Regulatory Information and Pictograms TSCA 8(b) inventory: Potassium sulfite 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. 233-321-1). 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. WHMIS (Canada) Not controlled under WHMIS (Canada). Other Classifications DSCL (EEC) This product is not classified according Not applicable. to the EU regulations. Health Hazard HMIS (U.S.A.)1 National Fire Protection 0 Flammability 0 Association (U.S.A.) Fire Hazard 1 0 Reactivity Health Reactivity 0 Specific hazard Personal Protection E WHMIS (Canada) (Pictograms) DSCL (Europe) (Pictograms) TDG (Canada) (Pictograms) Potassium sulfite ADR (Europe) (Pictograms) Protective Equipment Gloves. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent. SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

生态学数据: 该物质对环境可能有危害，对水是极其危害的即使小量产品也不能接触地下水，水道或污水系统，未经政府许可勿将材料排入周围环境。

安全

• 危害码 (欧洲): Xi: Irritant;
• 风险声明 (欧洲): R36/37/38
• 安全声明 (欧洲): S26-S36
• 危险品运输编码: NONH for all modes of transport
• WGK德国: 1
• 海关编码: 2832200000

制备

于碳酸钾水溶液内通入二氧化硫，使其饱和后，加等量的碳酸钠，经蒸发、结晶而得。

海关

海关编码	2832200000