TRIMETHYL BORATE
Trimethyl borate
CAS: 121-43-7
Molecular Formula: C3H9BO3
TRIMETHYL BORATE - Names and Identifiers
| Name | Trimethyl borate |
| Synonyms | Methyl borate METHYL BORATE BORON METHOXIDE Boron methoxide TRIMETHOXYBORANE TRIMETHYL BORATE Trimethyl borate METHYL BORATE-11B BORON TRIMETHOXIDE TRIMETHYL BORATE-11B Boronmethoxideinmethanol Boric acid trimethyl ester BORIC ACID TRIMETHYL ESTER Trimethyl borate (Boron methoxide) Trimethyl borate, (Boric acid trimethyl ester |
| CAS | 121-43-7 |
| EINECS | 204-468-9 |
| InChI | InChI:1S/C3H9BO3/c1-5-4(6-2)7-3/h1-3H3 |
| InChIKey | WRECIMRULFAWHA-UHFFFAOYSA-N |
TRIMETHYL BORATE - Physico-chemical Properties
| Molecular Formula | C3H9BO3 |
| Molar Mass | 103.91 |
| Density | 0.932 g/mL at 20 °C (lit.) |
| Melting Point | -34 °C (lit.) |
| Boling Point | 68-69 °C (lit.) |
| Flash Point | 8°F |
| Water Solubility | reacts |
| Solubility | Miscible with tetrahydrofuran, ether, isoporpylamine, hexane and methanol. |
| Vapor Density | 3.59 (vs air) |
| Appearance | Liquid |
| Specific Gravity | 0.915 |
| Color | Colorless |
| Exposure Limit | ACGIH: TWA 200 ppm; STEL 250 ppm (Skin)OSHA: TWA 200 ppm(260 mg/m3)NIOSH: IDLH 6000 ppm; TWA 200 ppm(260 mg/m3); STEL 250 ppm(325 mg/m3) |
| Merck | 14,9712 |
| BRN | 1697939 |
| Storage Condition | Store at |
| Stability | Stable. Incompatible with oxidizing agents. Decomposes slowly in the presence of moisture, rapidly in water. Flammable. |
| Sensitive | 7: reacts slowly with moisture/water |
| Refractive Index | n20/D 1.358(lit.) |
| Physical and Chemical Properties | A moisture-sensitive liquid that emits smoke in the air. Melting Point -29.3 ° C, boiling point 68-69 ° C, and methanol to form an azeotropic mixture, the azeotropic point of 55 ° C, the relative density (20/4) 0.920, refractive index (nD25) 1.3543(1.3548). Highly flammable, flash point -1 ℃. It is miscible with ether, methanol, Tetrahydrofuran, isopropylamine and hexane. Anhydrous state is stable, water decomposition into methanol and boric acid. |
| Use | Used as a semiconductor doping source, but also for the preparation of high-purity boron |
TRIMETHYL BORATE - Risk and Safety
| Risk Codes | R11 - Highly Flammable R21 - Harmful in contact with skin R23/25 - Toxic by inhalation and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. R10 - Flammable R36 - Irritating to the eyes R61 - May cause harm to the unborn child R60 - May impair fertility |
| Safety Description | S16 - Keep away from sources of ignition. S27 - Take off immediately all contaminated clothing. 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.) S25 - Avoid contact with eyes. S23 - Do not breathe vapour. S2 - Keep out of the reach of children. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S53 - Avoid exposure - obtain special instructions before use. |
| UN IDs | UN 2416 3/PG 2 |
| WGK Germany | 3 |
| RTECS | ED5600000 |
| FLUKA BRAND F CODES | 21 |
| TSCA | Yes |
| HS Code | 29209085 |
| Hazard Class | 3 |
| Packing Group | II |
| Toxicity | LD50 orally in rats: 6.14 ml/kg (Smyth) |
TRIMETHYL BORATE - 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) |
| Use | intermediate of potassium (sodium) borohydride. Vulcanizing agents, wood preservatives, catalysts, gelling agents, heat stabilizers, hydrogen flame extinguishing agents are also used in the flame retardant treatment of cotton and the preparation of active silica, and as reagents for the gas chromatographic analysis of carbohydrate derivatives. used as a semiconductor doping source, but also for the preparation of high-purity boron This product is used as paraffin, resin, petroleum solvent manufacturing, ketone catalyst, also used in the electronic industry, such as used as solvent, dehydrogenation agent, pesticides and used in organic synthesis, semiconductor boron diffusers gas chromatography analysis derivative reagent. Solvent. Catalysts for the manufacture of ketones. Semiconductor boron diffusion source. |
| production method | can be synthesized by a variety of methods, such as from pyridine-boron trifluoride complex preparation, or with methanol, boron fluoride; methanol, boric acid; Ortho-methyl silicate, boron halide preparation. |
| category | flammable liquid |
| toxicity grade | moderate |
| Acute toxicity | oral-rat LD50: 13000 mg/kg; Oral-mouse LD50:1290 mg/kg |
| stimulation data | eyes-rabbit 500 mg moderate |
| flammability hazard characteristics | in case of fire, high temperature, oxidant flammable; toxic flammable boride gas |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| extinguishing agent | dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 20:18:23
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