546-93-0

• 常用中文名：碳酸镁
• 常用英文名：magnesium carbonate
• CAS号：546-93-0
• 分子式：CH₂MgO₃++
• 分子量：86.32980
• 相关类别： 无机化工 无机盐 碳化物及碳酸盐
• 发布时间：2018-06-11 13:57:22
• 更新时间：2024-01-02 17:58:26
• 【用途一】
  用于医药、橡胶工业
  【用途二】
  用作制造中和胃酸和治疗十二指肠溃疡的药物
  【用途三】
  用于制造镁盐、氧化镁、防火涂料、油墨、玻璃、牙膏、橡胶填料等，食品中用作面粉改良剂、面包膨松剂等
  【用途四】
  我国规定可作为面粉处理剂，最大使用量为5.0g/kg；在小麦粉中最大使用量1.5g/kg(面粉中)。

名称

• 中文名: 碳酸镁,无水
• 英文名: magnesium carbonate
• 中文别名: 碳酸镁(1:1); 药用碳酸镁; 碳酸镁
• 英文别名: EINECS 208-915-9; Carbonic acid,magnesium salt (1:1); Magnesium carbonate; MFCD00064632

物化性质

• 沸点: 333.6ºC at 760mmHg
• 熔点: 990ºC
• 分子式: CH₂MgO₃++
• 分子量: 86.32980
• 闪点: 169.8ºC
• 精确质量: 85.98540
• PSA: 57.53000
• LogP: 0.22240
• 外观性状: 白色结晶固体或结晶粉末
• 储存条件: 库房低温,通风,干燥

MSDS

Name: Magnesium carbonate anhydrous Material Safety Data Sheet Synonym: Carbonate magnesium; Carbonic acid magnesium salt; Magnesite CAS: 546-93-0 Section 1 - Chemical Product MSDS Name:Magnesium carbonate anhydrous Material Safety Data Sheet Synonym:Carbonate magnesium; Carbonic acid magnesium salt; Magnesite Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS CAS# Chemical Name content EINECS# 546-93-0 Magnesium carbonate 100 208-915-9 Hazard Symbols: None Listed. Risk Phrases: None Listed. Section 3 - HAZARDS IDENTIFICATION EMERGENCY OVERVIEW Not available. Potential Health Effects Eye: Dust may cause mechanical irritation. Skin: May cause skin irritation. Low hazard for usual industrial handling. Ingestion: No hazard expected in normal industrial use. Used as antacid. Inhalation: May cause respiratory tract irritation. Chronic: Chronic, long-term exposure to dust may lead to "benign pneumoconiosis." Section 4 - FIRST AID MEASURES Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid. Skin: In case of contact, flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse. Ingestion: If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid. Inhalation: If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. Notes to Physician: Treat symptomatically and supportively. Section 5 - FIRE FIGHTING MEASURES General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing Media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. Section 6 - ACCIDENTAL RELEASE MEASURES General Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Section 7 - HANDLING and STORAGE Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid breathing dust. Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION Engineering Controls: Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits. Exposure Limits CAS# 546-93-0: United Kingdom, WEL - TWA: 10 mg/m3 TWA (inhalable dust); 4 mg/m3 (respirable dust) United Kingdom, WEL - STEL: 30 mg/m3 STEL (inhalable dust); 12 mg STEL (respirable dust) United States OSHA: 15 mg/m3 TWA (total dust); 5 mg/m3 TWA (respirable fraction) Belgium - TWA: 10 mg/m3 VLE France - VME: 10 mg/m3 VME Malaysia: 10 mg/m3 TWA (particulate matter containing no asbestos <1% crystalline sili Netherlands: 10 mg/m3 MAC Russia: 10 mg/m3 TWA Spain: 10 mg/m3 VLA-ED (this value is for the particulated matter that is free from asb Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin. Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Section 9 - PHYSICAL AND CHEMICAL PROPERTIES Physical State: Solid Color: white Odor: odorless pH: Not available. Vapor Pressure: 0 mm Hg @ 20 deg C Viscosity: Not available. Boiling Point: Not available. Freezing/Melting Point: 350 deg C (dec) Autoignition Temperature: Not applicable. Flash Point: Not applicable. Explosion Limits, lower: Not available. Explosion Limits, upper: Not available. Decomposition Temperature: 350 deg C Solubility in water: Insoluble. Specific Gravity/Density: 3.04 g/cm3 Molecular Formula: MgCO3 Molecular Weight: 84.31 Section 10 - STABILITY AND REACTIVITY Chemical Stability: Stable under normal temperatures and pressures. Conditions to Avoid: Dust generation, excess heat. Incompatibilities with Other Materials: Strong acids, formaldehyde. Hazardous Decomposition Products: Carbon dioxide, oxides of magnesium. Hazardous Polymerization: Has not been reported. Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 546-93-0: OM2470000 LD50/LC50: Not available. Carcinogenicity: Magnesium carbonate - Not listed by ACGIH, IARC, or NTP. Other: See actual entry in RTECS for complete information. Section 12 - ECOLOGICAL INFORMATION Section 13 - DISPOSAL CONSIDERATIONS Dispose of in a manner consistent with federal, state, and local regulations. Section 14 - TRANSPORT INFORMATION IATA Shipping Name: Not regulated. Hazard Class: UN Number: Packing Group: IMO Shipping Name: Not regulated. Hazard Class: UN Number: Packing Group: RID/ADR Shipping Name: Not regulated. Hazard Class: UN Number: Packing group: Section 15 - REGULATORY INFORMATION European/International Regulations European Labeling in Accordance with EC Directives Hazard Symbols: Not available. Risk Phrases: Safety Phrases: S 24/25 Avoid contact with skin and eyes. WGK (Water Danger/Protection) CAS# 546-93-0: No information available. Canada CAS# 546-93-0 is listed on Canada's DSL List. CAS# 546-93-0 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 546-93-0 is listed on the TSCA inventory. SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

CHEMICAL IDENTIFICATION RTECS NUMBER : OM2470000 CAS REGISTRY NUMBER : 546-93-0 LAST UPDATED : 199712 DATA ITEMS CITED : 23 MOLECULAR FORMULA : C-O3.Mg MOLECULAR WEIGHT : 84.32 WISWESSER LINE NOTATION : MG C-O3

安全

• 安全声明 (欧洲): S22-S24/25
• RTECS号: OM2470000

制备

【方法一】
将等量的结晶硫酸镁和碳酸钠分别溶于10倍量的水中，加热至60～80℃充分混合，在产生CO2的同时生成沉淀；过滤出沉淀，用70～80℃的热水充分混合、洗涤；最后在50~60℃下干燥得产品。
MgSO4+Na2CO3→Na2S04+MgCO3↓