Boric acid trimethyl ester

Boric acid trimethyl ester - 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

Boric acid trimethyl ester - 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

Boric acid trimethyl ester - 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)

Boric acid trimethyl ester - 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)