硅化铁 | 12022-99-0

• 物质功能分类: 无机化工 - 无机盐 - 硅化物及硅酸盐
• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 类金属盐
• 中文名称: 硅化铁
• 中文别名: 二硅化铁
• CAS: 12022-99-0
• 化学式: FeSi2
• 分子量: 112.02
• InChiKey: JRACIMOSEUMYIP-UHFFFAOYSA-N

物化性质

• 熔点：
  1220°C
• 密度：
  4,75 g/cm3
• 稳定性/保质期：
  在常温常压下，该物质是稳定的。应避免光、明火和高温环境。它是一种钢灰色的不透明体。在存在EtONa的情况下，它可以与乙醇反应生成Si(OEt)4。此物质主要用于焊接助熔剂中的脱氧剂、湿度传感器、FeSi2热电偶以及热电太阳能电池等应用中。

计算性质

• 辛醇/水分配系数(LogP)：
  -0.76
• 重原子数：
  3
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

安全信息

• TSCA：
  Yes
• 安全说明：
  S22,S24/25,S26,S37
• WGK Germany：
  3

SDS

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Section 1: Product Identification
Chemical Name: Iron silicide, 99%
CAS Registry Number: 12022-99-0
Formula: FeSi2
EINECS Number: 234-671-8
Chemical Family: metal silicide
Synonym: Ferrosilicon

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Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title Compound 12022-99-0 100% no data no data

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Section 3: Hazards Identification
Emergency Overview: May be irritating to skin and eyes and respiratory tract.
Primary Routes of Exposure: Ingestion, inhalation
Eye Contact: May be a mild to severe irritant to the eyes.
Skin Contact: May cause slight to mild irritation of the skin.
Inhalation: Do not breath dust. Inhalation of powder may lead to irritation of the respiratory tract.
Ingestion: Ingestion may lead to vomiting, and diarrhea.
Acute Health Affects: May be irritating to skin, eyes, mucous membranes and respiratory tract. Do not breath dust.
Chronic Health Affects: No information available on long-term chronic effects.
NTP: No
IARC: No
OSHA: No

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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 with water. Remove contaminated clothes if necessary. Seek medical assistance if
Skin Exposure:
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.

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SECTION 5: Fire Fighting Measures
Flash Point: not applicable
Autoignition Temperature: none
Explosion Limits: none
Extinguishing Medium: carbon dioxide, foam or dry powder
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 and If involved in a fire this material may produce silica dust.
Decomposion Products:
Unusual Fire or Explosion Hazards: Flammable solid. Dust may form explosive mixtures with air. Evolves flammable hydrogen with steam.

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SECTION 6: Accidental Release Measures
In the case of a spill, the material should be covered with dry soda ash, limestone, or sand. Place in open
Spill and Leak Procedures:
container. Flammable hydrogen evolution may occur if wet.

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SECTION 7: Handling and Storage
Store in a tightly sealed container in a cool dry place. Use good housekeeping practice to avoid accumulation
Handling and Storage:
of spilled dust, a fire hazard.

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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.
Ventilation: Material may form a fine dust. If possible, handle the material in an efficient fume hood.
If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator
Respirator:
Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation: Material may form a fine dust. If possible, handle the material in an efficient fume hood.
Additional Protection: No additional protection required.

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SECTION 9: Physical and Chemical Properties
Color and Form: gray pwdr.
Molecular Weight: 112.02
Melting Point: 1220 °C
Boiling Point: no data
Vapor Pressure: no data
Specific Gravity: 4.75
Odor: none
Solubility in Water: insoluble

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SECTION 10: Stability and Reactivity
Stability: air and moisture stable
Hazardous Polymerization: no hazardous polymerization
Conditions to Avoid: Mixtures of fine dust with air. Contact with an ignition source.
Incompatibility: Oxidizing agents and halogens
Decomposition Products: none

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SECTION 11: Toxicological Information
RTECS Data: No information available in the RTECS files.
Carcinogenic Effects: No data
Mutagenic Effects: No data
Tetratogenic Effects: No data

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SECTION 12: Ecological Information
Ecological Information: No information available

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SECTION 13: Disposal Considerations
Disposal: Dispose of according to local, state and federal regulations.

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SECTION 14: Transportation
Shipping Name (CFR): Non-hazardous
Hazard Class (CFR): NA
Additional Hazard Class (CFR): NA
Packaging Group (CFR): NA
UN ID Number (CFR): NA
Shipping Name (IATA): Non-hazardous
Hazard Class (IATA): NA
Additional Hazard Class (IATA): NA
Packaging Group (IATA): NA
UN ID Number (IATA): NA

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SECTION 15: Regulatory Information
TSCA: Listed in the TSCA inventory.
SARA (Title 313): Title compound not listed.
Second Ingredient: None

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SECTION 16 - ADDITIONAL INFORMATION
N/A

制备方法与用途

理化性质

二硅化铁是一种无机硅化合物，分子式为FeSi₂，分子量为119.975。它呈灰色粉末状，无气味，并具有四方晶系结构。该物质可用作氢的催化氧化和甲烷化催化剂，同时也是焊接助熔剂中的脱氧剂、湿度传感器、FeSi₂热电偶以及热电太阳能电池的重要成分。

用途

二硅化铁主要用作氢的催化氧化和甲烷化催化剂。此外，它还广泛应用于焊接助熔剂中的脱氧剂、湿度传感器、FeSi₂热电偶及热电太阳能电池等领域。

生产方法

将摩尔比为1:2的铁粉与硅粉均匀混合，在真空或惰性气氛中进行共熔或烧结。