18972-56-0

• 常用中文名：六水合六氟硅酸镁
• 常用英文名：Magnesium hexafluorosilicate hexahydrate
• CAS号：18972-56-0
• 分子式：F₆H₂MgOSi
• 分子量：184.39600
• 相关类别： 无机化工 无机盐 金属卤化物及卤酸盐 金属氟化物及盐
• 发布时间：2018-03-19 08:00:00
• 更新时间：2024-01-09 18:32:02
• 【用途一】
  作皮革储存中的防虫剂，并具有防水作用。

名称

• 中文名: 六水合六氟硅酸镁
• 英文名: hexamagnesium,fluoro(trioxido)silane,hexahydrate
• 中文别名: 六元酸镁六氟化硅; 六水六氟硅酸镁
• 英文别名: Magnesium hexafluorosilicate hexahydrate; MFCD00016196; EINECS 241-022-2

物化性质

• 密度: 1,79 g/cm3
• 沸点: 100ºC at 760 mmHg
• 熔点: 120°C (dec.)
• 分子式: F₆H₂MgOSi
• 分子量: 184.39600
• 精确质量: 183.96300
• PSA: 9.23000
• LogP: 2.07610
• 外观性状: 结晶白色,有淡香味的颗粒
• 储存条件:

  常温密闭避光，通风干燥

• 稳定性:

  1.常温常压下稳定

  2.避免的物料：水分/潮湿 酸
• 计算化学:

  1.疏水参数计算参考值（XlogP）:无

  2.氢键供体数量:6

  3.氢键受体数量:30

  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421

  7.重原子数量:42

  8.表面电荷:-6

  9.复杂度:28.4

  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:18

• 更多:

  1. 性状：无色或白色菱状或针状结晶

  2. 密度（g/mL,25/4℃）：1.79

  3. 相对蒸汽密度（g/mL,空气=1）：不确定

  4. 熔点（ºC）：120 (dec.)

  5. 沸点（ºC,常压）：不确定

  6. 沸点（ºC, 5.2kPa）：不确定

  7. 折射率：不确定

  8. 闪点（ºC）：不确定

  9. 比旋光度（º）：不确定

  10. 自燃点或引燃温度（ºC）：不确定

  11. 蒸气压（kPa,25ºC）：不确定

  12. 饱和蒸气压（kPa,60ºC）：不确定

  13. 燃烧热（KJ/mol）：不确定

  14. 临界温度（ºC）：不确定

  15. 临界压力（KPa）：不确定

  16. 油水（辛醇/水）分配系数的对数值：不确定

  17. 爆炸上限（%,V/V）：不确定

  18. 爆炸下限（%,V/V）：不确定

  19. 溶解性：易溶于水，溶于稀酸，难溶于氢氟酸，不溶于醇。水溶液呈酸性反应，与碱作用时可生成相应的氟化物及二氧化硅。不易潮解。风化后失水成无水物

MSDS

Section 1: Product Identification Chemical Name:Magnesium hexafluorosilicate hexahydrate, 98% CAS Registry Number:18972-56-0 Formula:MgSiF6.6H2O EINECS Number:none Chemical Family:halometallate salts Synonym:Magnesium fluorosilicate, Magnesium silicofluoride Section 2: Composition and Information on Ingredients IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL) Title compound18972-56-0100%2.5mg/m3 (as F)2.5mg/m3 (as F) Section 3: Hazards Identification Irritating to eyes, skin, and respiratory tract. Harmful if swallowed. If inhaled or swallowed, this compound may, Emergency Overview:to the extent that it may form water soluble fluoride, cause fluoride poisoning. Early symptoms include nausea, vomiting, diarrhea, and weakness Primary Routes of Exposure:Contact with skin and eyes. Inhalation of dust. Eye Contact:Causes irritation and may cause serious eye damage. Effects may not immediately appear. Causes irritation, with redness and pain. Soluble fluoride may be corrosive. Effects may not appear Skin Contact: immediately Inhalation of dust causes severe irritation to the respiratory tract, causing coughing, sore throat, and labored Inhalation: breathing. Ingestion:Harmful if swallowed. May cause salivation, nausea, vomiting, diarrhea, and abdominal pain. Irritating to eys, skin and respiratory tract. Dust: Fluoride poisoning may cause nausea, vomiting, diarrhea, Acute Health Affects: weakness, coma, respiratory failure and cardiovascular collapse. Chronic Health Affects:Prolonged exposure to hydrolysable fluorine compounds can cause deterioration of bone and tooth structure. 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 immediately with water. Remove contaminated clothing if necessary. Seek medical Skin Exposure: assistance if 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:not applicable Autoignition Temperature:none Explosion Limits:none Extinguishing Medium:None. Material is non-flammable. 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 corrosive fumes of hydrofluoric acid. Decomposion Products: Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards. SECTION 6: Accidental Release Measures Small spills can be mixed with powdered sodium bicarbonate, lime, or calcium carbonate and swept up. Avoid Spill and Leak Procedures:raising dust. Spillage in areas not adequately ventilated may require an evacuation of area. Emergency response teams will require self-contained breathing apparatus. SECTION 7: Handling and Storage Handling and Storage:Store in a tightly sealed non-glass container away from moisture. 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. Consult with glove manufacturer to determine the proper type of glove. Ventilation:Solid may form a toxic fine dust. If possible, handle the solid in an efficient fume hood. If in form of fine dust and ventilation is not available a respirator should be worn. The use of respirators Respirator: requires a Respirator Protection Program to be in compliance with 29 CFR 1910.134. Ventilation:Solid may form a toxic fine dust. If possible, handle the solid in an efficient fume hood. Additional Protection:No additional protection required. SECTION 9: Physical and Chemical Properties Color and Form:white pwdr. Molecular Weight:166.39 (274.48) Melting Point:no data Boiling Point:no data Vapor Pressure:no data Specific Gravity:1.788 Odor:none Solubility in Water:soluble SECTION 10: Stability and Reactivity Stability:air and moisture stable Hazardous Polymerization:no hazardous polymerization Conditions to Avoid:none Incompatibility:active metals Decomposition Products:hydrogen fluoride, magnesium fluoride and silicon fluorides SECTION 11: Toxicological Information RTECS Data:Oral (guinea pig); LD50:200 mg/kg. Subcutaneous (frog); LDLo:420 mg/kg. Carcinogenic Effects:no data Mutagenic Effects:no data Tetratogenic Effects:no data 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):Magnesium fluorosilicate Hazard Class (CFR):6.1 Additional Hazard Class (CFR):NA Packaging Group (CFR):III UN ID Number (CFR):UN# 2853 Shipping Name (IATA):Magnesium fluorosilicate Hazard Class (IATA):6.1 Additional Hazard Class (IATA):NA Packaging Group (IATA):III UN ID Number (IATA):UN# 2853 SECTION 15: Regulatory Information TSCA: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：几尼猪口经LD50：200 mg/kg；青蛙皮下注射 LDLo： 420 mg/kg 生态学数据: 通常对水体是稍微有害的，不要将未稀释或大量产品接触地下水，水道或污水系统，未经政府许可勿将材料排入周围环境。 CHEMICAL IDENTIFICATION RTECS NUMBER : VV8575000 CHEMICAL NAME : Silicate(2-), hexafluoro-, magnesium, hexahydrate CAS REGISTRY NUMBER : 18972-56-0 LAST UPDATED : 199706 DATA ITEMS CITED : 9 MOLECULAR FORMULA : F6-Si.Mg.6H2-O MOLECULAR WEIGHT : 274.52 WISWESSER LINE NOTATION : MG SI-F6 &QH 6 HEALTH HAZARD DATA ACUTE TOXICITY DATA TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - guinea pig DOSE/DURATION : 200 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : 28ZEAL "Pesticide Index," Frear, E.H., ed., State College, PA, College Science Pub., 1969 Volume(issue)/page/year: 4,265,1969 TYPE OF TEST : LDLo - Lowest published lethal dose ROUTE OF EXPOSURE : Subcutaneous SPECIES OBSERVED : Amphibian - frog DOSE/DURATION : 420 mg/kg REFERENCE : CRSBAW Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. (SPPIF, B.P.22, F-41353 Vineuil, France) V.1- 1849- Volume(issue)/page/year: 124,133,1937 *** U.S. STANDARDS AND REGULATIONS *** OSHA PEL (Gen Indu):8H TWA 2.5 mg(F)/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 2.5 mg(F)/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 2.5 mg(F)/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 2.5 mg(F)/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 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO FLUORIDES, INORGANIC-air:10H TWA 2.5 mg(F)/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M1631 No. of Facilities: 337 (estimated) No. of Industries: 6 No. of Occupations: 8 No. of Employees: 8457 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M1631 No. of Facilities: 12 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 310 (estimated)

安全

• 危害码 (欧洲): T+
• 风险声明 (欧洲): R25
• 安全声明 (欧洲): S24/25-S45
• 危险品运输编码: 2853
• 包装等级: III
• 危险类别: 6.1

制备

1.将1 809kg萤石粉，335kg硅砂和1 858kg硫酸依次投入反应转炉中，制备氟硅酸，用吸收塔吸收得含量为20～22°Bé的氟硅酸溶液。除去硫酸盐后将其打入中和釜，加菱苦粉悬浮液中和至pH值为3～4。过滤，将滤液打入蒸发器，浓缩后打入结晶器冷却结晶。干燥后得产品。反应式如下：