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Product FOB Price Min.Order Supply Ability Supplier
Trimethyl borate
Cas No: 121-43-7
USD $ 2.0-2.0 / Kilogram 1 Kilogram 1-10 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
High quality Trimethyl borate
Cas No: 121-43-7
No Data 1 Kilogram 30 Metric Ton/Month Simagchem Corporation Contact Supplier
Trimethyl Borate CAS No.: 121-43-7
Cas No: 121-43-7
No Data 1 Metric Ton 300 Metric Ton/Month NINGXIA BEST PHARMACEUTICAL CHEMILAL CO.,LTD. Contact Supplier
Cas No: 121-43-7
No Data No Data No Data Aecochem Corp. Contact Supplier
High quality 121-43-7 Trimethyl borate
Cas No: 121-43-7
USD $ 1300.0-1600.0 / Kilogram 1 Kilogram 99999 Kilogram/Year Hangzhou Dingyan Chem Co., Ltd Contact Supplier
Trimethyl borate
Cas No: 121-43-7
No Data 1 Gram 100 Metric Ton/Month Yurui(Shanghai)Chemical Co.,Ltd Contact Supplier
Trimethyl Borate CAS 121-43-7
Cas No: 121-43-7
No Data 1 Metric Ton Metric Ton/Day Hefei TNJ chemical industry co.,ltd Contact Supplier
Trimethyl borate
Cas No: 121-43-7
No Data 1 Kilogram 20 Metric Ton/Quarter Henan Allgreen Chemical Co.,Ltd Contact Supplier
Trimethyl borate
Cas No: 121-43-7
USD $ 2.0-3.0 / Kilogram 1 Kilogram 50 Metric Ton/Day EAST CHEMSOURCES LIMITED Contact Supplier
Amadis Chemical offer CAS#121-43-7;CAT#A804732
Cas No: 121-43-7
No Data 10 Milligram Amadis Chemical Co., Ltd. Contact Supplier

121-43-7 Usage

Health Hazard

May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Purification Methods

Carefully fractionate the borate through a gauze-packed column. Re-distil and collect it in weighed glass vials and seal them. Keep it away from moisture. It undergoes alkyl exchange with alcohols and forms azeotropes, e.g. with MeOH the azeotrope consists of 70% (MeO)3B and 30% MeOH with b 52-54o/760mm, d 0.87. [Charnley et al. J Chem Soc 2288 1952, Gerrard & Lappert Chem Ind (London) 53 1952, Schlesinger et al. J Am Chem Soc 75 213 1953.] It has also been dried with Na and then distilled. [Beilstein 1 IV 1269.]


As solvent for waxes, resins, oils; catalyst in the manufacture of ketones; analysis of paint and varnish ingredients; as neutron detector gas in the presence of a scintillation counter; as a promoter of diborane reactions.

General Description

A water-white liquid. Denser than water. Flash point 80°F. Vapors heavier than air. Used as a solvent and fungicide for fruit.


ChEBI: A member of the class of borate esters obtained by the formal condensation of three equivalents of methanol with boric acid.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. 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. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Air & Water Reactions

Highly flammable. Rapidly decomposes in water.

Reactivity Profile

Borates, such as Trimethyl borate, behave similarly to esters in that they react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters/borates with alkali metals and hydrides.

121-43-7 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Aldrich (452920)  Trimethylborate  ≥98% 121-43-7 452920-2L 1,669.59CNY Detail
Aldrich (452920)  Trimethylborate  ≥98% 121-43-7 452920-500ML 510.12CNY Detail
Aldrich (452920)  Trimethylborate  ≥98% 121-43-7 452920-100ML 160.29CNY Detail
Aldrich (443999)  Trimethylborate  purified by redistillation, ≥99.5% 121-43-7 443999-1L 3,856.32CNY Detail
Aldrich (443999)  Trimethylborate  purified by redistillation, ≥99.5% 121-43-7 443999-100ML 746.46CNY Detail
Sigma-Aldrich (92330)  Trimethylborate  purum, ≥99.0% (GC) 121-43-7 92330-1L 1,826.37CNY Detail
Sigma-Aldrich (92330)  Trimethylborate  purum, ≥99.0% (GC) 121-43-7 92330-250ML 195.39CNY Detail
Aldrich (447218)  Trimethylborate  99.999% (trace metal basis) 121-43-7 447218-4X25ML 939.51CNY Detail
Aldrich (447218)  Trimethylborate  99.999% (trace metal basis) 121-43-7 447218-100ML 930.15CNY Detail
Alfa Aesar (43765)  Trimethyl borate, 99.99% (metals basis)    121-43-7 500g 4643.0CNY Detail
Alfa Aesar (43765)  Trimethyl borate, 99.99% (metals basis)    121-43-7 100g 1162.0CNY Detail
Alfa Aesar (43765)  Trimethyl borate, 99.99% (metals basis)    121-43-7 25g 375.0CNY Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017


1.1 GHS Product identifier

Product name trimethyl borate

1.2 Other means of identification

Product number -
Other names Trimthyl borate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:121-43-7 SDS

121-43-7Downstream Products

121-43-7Related news

Thermodynamic modeling of decomposition processes of Trimethyl borate (cas 121-43-7) in different gas mixtures09/04/2019

A thermodynamic modeling on the chemical vapor deposition in the B-C-O-H, B-C-O-H-He and B-C-O-H-N systems was performed. The thermodynamic equilibrium in these systems was calculated by minimization of Gibbs free energy for the conditions: 300 ≤ Tdep, K ≤ 2000; 0.001 ≤ Ptotal, Torr ≤ 760; m...detailed

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