1312-76-1

• 常用中文名：硅酸钾
• 常用英文名：Potassium silicate
• CAS号：1312-76-1
• 分子式：K₄O₄Si
• 分子量：248.47600
• 相关类别： 无机化工 无机盐 硅化物及硅酸盐
• 发布时间：2018-02-07 08:00:00
• 更新时间：2024-01-02 13:23:53
• 【用途一】
  用于还原染料、防火剂、电焊条、肥皂等
  【用途二】
  主要用于电子束管荧光屏涂覆，也可作为制造荧光粉和导电石墨乳的辅助材料
  【用途三】
  用作催化剂和荧光屏的粘合剂
  【用途四】
  用于电焊条、焊接用电极、还原染料、防火剂的制造。用作荧光屏荧光粉黏结剂和肥皂填料。
  【用途五】
  保护涂层(防止“起霜”即盐表面结晶)。催化剂。黏合剂。制造玻璃、陶瓷中用作去垢剂。磷光体胶粘于显象管上，涂电焊棒外面，可以克服溅散。

名称

• 中文名: 硅酸钾
• 英文名: Potassium Silicate, Anhydrous
• 中文别名: 钾水玻璃; 硅酸钾水合物
• 英文别名: Potassium silicate hydrate; MFCD00145152; EINECS 215-199-1; tetrapotassium,silicate; Potassium silicate

物化性质

• 密度: 1.39 g/cm3 (20ºC)
• 沸点: > 100ºC
• 分子式: K₄O₄Si
• 分子量: 248.47600
• 精确质量: 247.81100
• PSA: 92.24000
• 外观性状: 透明无色,水状的溶液
• 储存条件:

  贮存于一般库房中，或用槽罐贮存。

• 稳定性:

  如果遵照规格使用和储存则不会分解，未有已知危险反应，避免氧化物、酸。易溶于水和酸，并游离出胶状硅酸，钾含量愈高则愈易溶。不溶于醇。

  失火时，可用水和各种灭火器扑救。

• 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：153.889084 Da

  8、标称质量：154 Da

  9、平均质量：154.2803 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92.2

  7.重原子数量:9

  8.表面电荷:0

  9.复杂度:19.1

  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：黏稠状液体

  2. 密度（g/mL,25℃）：未确定

  3. 相对蒸汽密度（g/mL,空气=1）：未确定

  4. 熔点（ºC）：未确定

  5. 沸点（ºC,常压）：未确定

  6. 沸点（ºC,0.05mmHg）：未确定

  7. 折射率（n20/D）：未确定

  8. 闪点（ºF）：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（mmHg,25ºC）：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：可溶于水，溶于酸后游离出胶状硅酸。其溶解度比硅酸钠高得多。不溶于醇。

MSDS

Section 1. Chemical Product and Company Identification Potassium Silicate Common Name/ Trade Name Manufacturer Commercial Name(s) Synonym Chemical Name Chemical Family Potassium Silicate 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. 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. 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 if symptoms appear. 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. Not applicable. Flash Points Flammable LimitsNot applicable. Products of CombustionNot available. Fire Hazards in Presence of Not applicable. Various Substances Risks of explosion of the product in presence of mechanical impact: Not available. Explosion Hazards in Risks of explosion of the product in presence of static discharge: Not available. Presence of Various Substances Fire Fighting MediaNot applicable. and Instructions Special Remarks onNot available. Fire Hazards Special Remarks on Explosion Heating a mixture of powdered magnesium and silica causes a violent explosion. Hazards(Quartz) 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. Be careful that the product is not present at a concentration level above TLV. Check TLV on the MSDS and with local authorities. Potassium Silicate Section 7. Handling and Storage PrecautionsDo 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. Keep container tightly closed. Keep container in a cool, well-ventilated area. Storage 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 a Large Spillused to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist BEFORE handling this product. Exposure LimitsQuartz TWA: 0.1 (mg/m3) from ACGIH (TLV) [United States] Inhalation Respirable. TWA: 0.1 (mg/m3) from OSHA (PEL) [United States] Inhalation Respirable. TWA: 0.3 (mg/m3) from OSHA (PEL) [United States] Inhalation Total. TWA: 0.05 (mg/m3) from NIOSH [United States] Inhalation Respirable. TWA: 0.1 (mg/m3) [Canada] Inhalation Respirable. TWA: 0.3 [Canada] Inhalation Total. TWA: 0.3 [United Kingdom (UK)] Inhalation Total. Consult local authorities for acceptable exposure limits. Section 9. Physical and Chemical Properties Physical state and appearance Solid. (Powdered solid.)OdorNot available. TasteNot available. 248.44 g/mole Molecular Weight ColorWhite. pH (1% soln/water)Not applicable. Not available. Boiling Point Melting PointNot available. Not available. Critical Temperature Specific GravityNot available. Vapor PressureNot applicable. Vapor DensityNot available. VolatilityNot available. Not available. Odor Threshold Water/Oil Dist. Coeff.Not available Not available. Ionicity (in Water) Dispersion PropertiesNot available SolubilityUsually very slowly soluble in cold water. Considered almost insoluble in water. Insoluble in alcohol. Potassium Silicate Section 10. Stability and Reactivity Data The product is stable. Stability Instability TemperatureNot available. Incompatible materials. Conditions of Instability Incompatibility with various Reactive with oxidizing agents, acids. substances Not available. Corrosivity Special Remarks onIncompatiblity with powferfull oxidizers: fluorine, chlorine trifluoride, manganese trioxide, oxygen diflluoride, Reactivityhydrogen peroxide, etc.; Incompatible with acetylene and ammonia. This chemical is attacked by Hydrogen Fluoride. Silica will dissolve in Hydrofluoric Acid and produce the corrosive gas Silicon Tetrafluoride (SiF4). May be attacked by strong alkalis, especially when hot. (Quartz) 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 CARCINOGENIC EFFECTS: Classified 1 (Proven for human.) by IARC, 1 (Clear evidence.) by NTP, + (Proven.) by NIOSH [Quartz]. Classified A2 (Suspected for human.) by ACGIH [Quartz]. Other Toxic Effects onHazardous in case of skin contact (irritant), of ingestion, . Slightly hazardous in case of inhalation (lung irritant). Humans Special Remarks onLowest Published Lethal Dose/Conc: Toxicity to AnimalsLCL [Human] - Route: Inhalation; Dose: 300 ug/m3/10Y intermittent (Quartz) Special Remarks onMay cause cancer. (Quartz) Chronic Effects on Humans Special Remarks on otherAcute Potential Health Effects: Toxic Effects on HumansSkin: Causes skin irritation. Eyes: Causes eye irritation. May cause eye injury or damage. Inhalation: Causes respiratory tract irritation. This product contains quartz (crystalline silica). Acute pneumoconiosis from overwhelming exposure to silica dust has occurred. Coughing and irritation of throat are early symptoms. Inhalation of quartz (crystalline silica) is classified as a human carcinogen. Risk of cancer depends upon duration and level of exposure. May also affect liver. Chronic exposure to quartz (crystalline silica) can also cause silicosis, a form of lung scaring that can cause shortness of breath, reduced lung function. May also affect blood. Ingestion: May be harmful if swallowed. Can cause digestive/gastrointestinal tract irritation. 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 Not available. Special Remarks on the Products of Biodegradation Potassium Silicate 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). Not applicable. Identification Not applicable. Special Provisions for Transport DOT (Pictograms) Section 15. Other Regulatory Information and Pictograms California prop. 65: This product contains the following ingredients for which the State of California has Federal and State found to cause cancer, birth defects or other reproductive harm, which would require a warning under the Regulations statute: Quartz (crystalline silica) California 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: Quartz (crystalline silica) TSCA 8(b) inventory: Potassium Silicate; Quartz (crystalline silica) CaliforniaCalifornia prop. 65: This product contains the following ingredients for which the State of California has Proposition 65found to cause cancer which would require a warning under the statute: Quartz (crystalline silica) 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 RegulationsOSHA: Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200). For CAS no. 1312-76-1: EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances (EINECS No. 215-199-1). 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) CLASS D-2B: Material causing other toxic effects (TOXIC). Other Classifications DSCL (EEC)R36/37/38- Irritating to eyes,S26- In case of contact with eyes, rinse respiratory system and skin.immediately with plenty of water and seek medical advice. S37- Wear suitable gloves. Health Hazard HMIS (U.S.A.)2 National Fire Protection 0 Flammability 0 Association (U.S.A.) Fire Hazard 2 0 Reactivity Health Reactivity 0 Specific hazard Personal Protection E WHMIS (Canada) (Pictograms) Potassium Silicate DSCL (Europe) (Pictograms) TDG (Canada) (Pictograms) ADR (Europe) (Pictograms) Protective Equipment Gloves. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent. Wear appropriate respirator when ventilation is inadequate. SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

生态学数据: 对是水稍微有危害的不要让未稀释或大量的产品接触地下水、水道或者污水系统，若无政府许可，勿将材料排入周围环境。

安全

• 危害码 (欧洲): Xi
• 风险声明 (欧洲): 37/38-41
• 安全声明 (欧洲): 26-39
• WGK德国: 3
• 海关编码: 2839900090

制备

1.熔融法将硅砂和苛性钾按一定比例混合后加入熔融炉中，用重油或电加热至1200～1400℃，当形成完全熔融透明体时，从炉中放出冷却固化后，再放入高压釜中，通加压蒸汽（0.2MPa）溶解。将溶液静置澄清，除去杂质，澄清液经浓缩得到硅酸钾成品。 2. 采用熔融法（即干法）。将硅砂与苛性钾在熔融炉中作用后，再经加压蒸汽溶解而得。

海关

海关编码	2839900090