| Product Identification | Back to Contents | 【Product Name】
Trimethyl borate | 【Synonyms】
Boric acid, trimethyl ester
Methyl borate
Trimethoxyborane
Trimethylborate | 【CAS】
121-43-7 | 【Formula】
C3H9BO3 | 【Molecular Weight】
103.91 | 【EINECS】
204-468-9 | 【RTECS】
ED5600000 | 【RTECS Class】
Primary Irritant | 【Merck】
12,9842 | 【Beilstein/Gmelin】
1697939 | 【Beilstein Reference】
4-01-00-01269 | 【EC Index Number】
005-005-00-1 | 【EC Class】
Flammable; Harmful |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Water-white liquid. | 【Solubility in water】
Decomposes | 【Melting Point】
-34 - -29 | 【Boiling Point】
67 | 【Vapor Pressure】
137 (25 C) | 【Density】
0.915 g/cm3 (20 C) | 【Partition Coefficient】
1.45 | 【Heat Of Vaporization】
29.7 kJ/mol | 【Usage】
As solvent for waxes, resins, oils, catalyst in manufacture of ketones, analysis of paintermediate & varnish ingredients, as neutron detector gas in presence of a scintillation counter, as promotor of diborane reactions. | 【Vapor Density】
3.6 | 【Refractive Index】
1.3576 |
| First Aid Measures | Back to Contents | 【Ingestion】
Get medical aid. Wash mouth out with water. | 【Inhalation】
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear. | 【Skin】
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. | 【Eyes】
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. |
| Handling and Storage | Back to Contents | 【Storage】
Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Keep under a nitrogen blanket. Flammables-area. | 【Handling】
Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. |
| Hazards Identification | Back to Contents | 【Inhalation】
May cause respiratory tract irritation. | 【Skin】
May cause skin irritation. Harmful if absorbed through the skin. | 【Eyes】
May cause eye irritation. | 【Ingestion】
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. | 【Hazards】
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. | 【EC Risk Phrase】
R 11 21 | 【EC Safety Phrase】
S 23 25 | 【UN (DOT)】
2416 |
| Exposure Controls/Personal Protection | Back to Contents | 【Personal Protection】
Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear a chemical apron. | 【Respirators】
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary. | 【Exposure Effects】
Significant ingestions or dermal exposures can be associated with weak, rapid pulse, cyanosis and abnormally low blood pressure. The patient may present with reduced body temperature, elevated body temperature or normal body temperature. Headache, lethargy, restlessness, weakness, CNS irritation, and/or seizures may occur with long term or repeated exposures. There is insufficient information concerning the reproductive effects of borates in humans. Adverse testicular effects and infertility have been reported in animals. <br>There have been limited animal studies which suggest decreased ovulation, fetotoxicity and developmental defects may occur with very high exposure levels. Maternal toxicity was present in some studies. | 【Poison Class】
5 |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
-11 | 【Fire Fighting】
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Do NOT use dry chemical. | 【Fire Potential】
HIGHLY FLAMMABLE. |
| Stability and Reactivity | Back to Contents | 【Disposal Code】
3 | 【Incompatibilities】
Oxidizing agents, strong acids, moist air or water. | 【Stability】
Stable under normal temperatures and pressures. | 【Decomposition】
Carbon monoxide, carbon dioxide, oxides of boron. | 【Combustion Products】
Fire may produce irritating, corrosive and/or toxic gases. |
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