Boron fluoride
Boron fluoride
CAS: 7637-07-2
Molecular Formula: BF3
Boron fluoride - Names and Identifiers
| Name | Boron fluoride |
| Synonyms | Boron fluoride BoronTrifuoride Boron trifluoride bf3-butanol solution Boron Trifluoride Anhydrous boron trifluoride - butanol reagent BORON TRIFLUORIDE CYL.WITH 5 L (NET~3KG) BORON TRIFLUORIDE CYL. WITH 2 L (NET ~1. 2 KG) |
| CAS | 7637-07-2 |
| EINECS | 206-766-4 |
| InChI | InChI=1S/BF3/c2-1(3)4 |
Boron fluoride - Physico-chemical Properties
| Molecular Formula | BF3 |
| Molar Mass | 67.81 |
| Density | 0.87 g/mL at 20 °C |
| Melting Point | −127°C(lit.) |
| Boling Point | −100°C(lit.) |
| Flash Point | 4°C |
| Water Solubility | MAY DECOMPOSE |
| Vapor Presure | >1 mmHg at 20 °C |
| Vapor Density | 2.38 (21 °C, vs air) |
| Appearance | Liquid |
| Color | Colorless |
| Odor | Pungent odor detectable at 1.5 ppm |
| Exposure Limit | ACGIH: TWA 0.1 ppm(2.5 mg/m3); Ceiling 0.7 ppmOSHA: Ceiling 1 ppm(3 mg/m3)NIOSH: IDLH 25 ppm(250 mg/m3); Ceiling 1 ppm(3 mg/m3) |
| Merck | 14,1349 |
| Storage Condition | 2-8°C |
| Sensitive | Moisture Sensitive |
| Refractive Index | n20/D 1.38 |
| Physical and Chemical Properties | A colorless, non-flammable, non-flammable, asphyxiating odor. Soluble in concentrated sulfuric acid, nitric acid, kerosene, benzene, chloroform, carbon tetrachloride, tetrachloroethane, carbon disulfide and nitrobenzene and other organic solvents, but also soluble in water and decomposition into boric acid and fluoroboric acid. |
Boron fluoride - Risk and Safety
| Risk Codes | R14 - Reacts violently with water R26 - Very Toxic by inhalation R35 - Causes severe burns R39/23/24/25 - R24/25 - R11 - Highly Flammable R67 - Vapors may cause drowsiness and dizziness R41 - Risk of serious damage to eyes R10 - Flammable R37 - Irritating to the respiratory system R22 - Harmful if swallowed |
| Safety Description | S9 - Keep container in a well-ventilated place. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S28A - S16 - Keep away from sources of ignition. |
| UN IDs | UN 3286 3/PG 2 |
| WGK Germany | 3 |
| RTECS | ED2275000 |
| FLUKA BRAND F CODES | 21 |
| TSCA | Yes |
| Hazard Note | Corrosive/Toxic |
| Hazard Class | 2.3 |
| Toxicity | LC50 inhal (rat) 387 ppm (1070 mg/m3; 1 h) PEL (OSHA) 1 ppm (3 mg/m3; ceiling) TLV (ACGIH) 1 ppm (3 mg/m3; ceiling) |
Boron fluoride - Nature
Open Data Verified Data
colorless gas, with irritating suffocation odor. Melting Point -126.8 °c. Boiling point-loi °c. Gas relative density 3. 07666. Triple point -128.4 °c (8. 34kPa). The heat of fusion was 4.20kj/mol, and the heat of gasification was 19. 33kj/mol. It is a colorless liquid at -10 °c. White solid at -160 °c. Soluble in concentrated sulfuric acid, nitric acid, kerosene, benzene, methane, carbon tetrachloride, carbon disulfide and nitrobenzene and other organic solvents, soluble in water and decomposed into boric acid and fluorine boric acid, and release heat. No burning, no combustion. At room temperature, boron trifluoride can corrode glass, dry boron trifluoride is non-corrosive to common metals, while wet boron trifluoride is highly corrosive. Non-combustible gases, which generate dense white smoke in moist air. Strong reactivity, and metal, organic matter, etc.
Last Update：2025-06-10 22:55:16
Boron fluoride - Preparation Method
Open Data Verified Data
A thermal decomposition method was used. With Chemically pure sodium fluoroborate (containing NaBF4 99%) as raw material, sodium fluoroborate is decomposed by heating to a certain temperature, and boron trifluoride gas is released. After purification, it enters the collector to prepare high purity boron trifluoride.
Last Update：2025-06-10 22:55:16
Boron fluoride - Application
Open Data Verified Data
high purity boron trifluoride is one of the important raw materials in the electronics and optical fiber industry, and is an important doping source in semiconductor technology. It is mainly used for ion implantation and doping in the production of semiconductor devices and integrated circuits. When used as a flux in welding magnesium, BF3 can prevent oxidation of magnesium and its alloys during melt casting, and can also be used as a component of a boronizing treatment agent for steel or other metal surfaces, and also as a lubricant for cast steel. BF3 can also be used as a raw material for the synthesis of organic borides. In many organic reactions and petroleum products, as a catalyst for polymerization, alkylation and condensation reactions, BF3 and compounds are used as curing agents in epoxy resins. It can be used as a raw material for preparing each optical fiber preform.
Last Update：2025-08-19 16:24:40
Boron fluoride - Safety
Open Data Verified Data
rats inhaled 4H LCso:1180mg/ma. Boron trifluoride is a toxic and corrosive substance, which has the toxicity of both hydrogen chloride and boron. It is strongly irritating to the eyes, skin and respiratory tract, and prolonged inhalation can lead to pulmonary edema. Gas irritation, can seriously stimulate the eyes and respiratory tract, and can corrode the skin, causing burns. The operator must wear special protective clothing for the whole body. If the skin, eyes and so on are accidentally contacted, rinse with water immediately and send them to the hospital for treatment if they have burns. Store in a cool, dry, well-ventilated special warehouse, away from heat sources and fire. Avoid sun exposure and moisture; Close proximity should be provided with water sources for Isolation storage and transportation of metals, organics, glass products and hydrous articles. When there is a fire, the gas and smoke particles are eliminated by using atomized water, and the leakage site is not sprayed directly with water, otherwise the evaporation will be accelerated.
Last Update：2025-06-10 22:55:16
Boron fluoride - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| toxicity | highly reactive, explosive decomposition in water. With the metal, organic matter and other intense reaction, cold can also corrode glass. Highly toxic. Both hydrogen fluoride and boron toxicity. Mice inhaled LC50:3460 mg/m3 x 2H. Gas irritation, can seriously stimulate the eyes and respiratory tract, and can corrode the skin, causing burns. Acute poisoning to Dry Cough, shortness of breath, chest tightness, chest urgency, a large number of inhalation can cause Pneumonia. Patients with inhaled gas should be quickly separated from the contaminated area, washed with water to rinse eyes, nose and mouth, remove contaminated clothing, and send them to the hospital for first aid; Eyes are irritated and washed with water for more than 15 minutes, the patient was sent to hospital for treatment. Skin contact was rinsed with water first, then washed thoroughly with soap. boron trifluoride decomposes to form toxic and corrosive smoke (hydrogen fluoride) when heated or in contact with moist air, corrodes eyes, respiratory tract and skin, and inhalation of toxic smoke can lead to emphysema and even death. After contact with the throat tingling, Cough, Dyspnea, eyes and skin congestion, pain, blurred vision, skin burning phenomenon. Wear protective equipment for full protection. See boron trichloride for first aid. The maximum allowable concentration is 3 mg/m3. |
| purpose | is often used as a catalyst for condensation, ionic polymerization, isomerization and other reactions, it is also a raw material for preparing tetrafluoroborate . It is mainly used for ion implantation and doping in the production of semiconductor devices and integrated circuits. It is mainly used as organic reaction catalyst, such as esterification, alkylation, polymerization, isomerization, sulfonation, nitration, etc. Oxidation inhibitors in the casting of magnesium and alloys. It is the main raw material for the preparation of boron halide, boron element, borane, sodium borohydride and so on. Also used in the electronics industry. |
| production method | potassium fluoroborate, boronic anhydride, sulfuric acid method the potassium fluoroborate and boronic anhydride are ground together evenly, according to a certain ratio of ingredients into the reactor, and then add concentrated sulfuric acid, continuous stirring, solid and liquid mixed evenly, gradually heated, to a certain extent, there is boron fluoride production. When the temperature reaches about 40 °c, the reactants begin to boil, and when the temperature reaches 93~130 °c, the most gas is produced. The resulting boron fluoride gas was purified and then introduced into the collector. The thermal decomposition method of 6KBF4 B2O3 6H2SO4 → 8BF3 6KHSO4 3H2O uses refined sodium fluoroborate as raw material, adds it to the thermal decomposer, starts to decompose sodium fluoroborate when heated to 384 ℃, and releases boron trifluoride gas, after purification into the collector, the preparation of high purity boron trifluoride. NaBF4 [Δ] → BF3 NaF |
| category | hazardous gas |
| toxicity grade | poisoning |
| Acute toxicity | inhalation-rat LC50:1180 mg/CM/4 H; Inhalation-mouse LC50:3460 mg/ml/2 h |
| explosive hazard characteristics | the cylinder can be exploded by heat and sun exposure; The leakage releases highly toxic gas |
| flammability hazard characteristics | toxic boron trifluoride gas emitted by heat; Boron trifluoride gas decomposed by water |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Stored separately from oxidants and acids |
| extinguishing agent | dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| Occupational Standard | TWA 3 mg/m3; Tel 8.3 mg/m3 |
| DOT Classification | 2.3, Hazard Zone B (Gas poisonous by inhalation) |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-and health-threatening concentration | 25 ppm |
Last Update：2024-04-09 15:16:52
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Spot supply
Product Name: Boron trifluoride Visit Supplier Webpage Request for quotationCAS: 7637-07-2
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Email: 3623107365@qq.com
Mobile: 18916960931
QQ: 3623107365
Wechat: 18916960931
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