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Trimethyl borate CAS#121-43-7

Name: Trimethyl borate CAS#121-43-7
Brand: SUNTECHEMICAL
SKU: pr2408231131
Price: 1200 USD
Availability: InStock

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CAS No.:

121-43-7

Grade:

Pharmaceutical Grade

Content:

99.5%

Port:

Shipping to be negotiated

Brand:

SUNTECHEMICAL

Packaging:

25kg/drum

Price valid (until):

2025-05-31

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Tianjin Shengtai Chemical Co.,Ltd

Company Type:

Trader

Location:

China

Qualification:

Main Products:

Epichlorohydrin,Epoxy resin,Calcium chloride,2-Hydroxyethyl acrylate (HEA),2-HYDROXYPROPYLACRYLATE(HPA),2-Hydroxy Ethyl Methacrylate (HEMA)

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Product Description
Seller Information
Inquiry History

Description

PRODUCT DETAIL

Trimethyl borate, with the chemical formula C3H9BO3, is an organoboron compound used widely in industrial and chemical applications. It is a colorless liquid with a pungent odor. This compound serves primarily as a reagent in the synthesis of various chemicals, including esters and borates, and is also used as a catalyst in certain polymerization processes. Due to its flammable and toxic nature, proper safety measures should be followed during handling.

Product Details:

Property	Description
Chemical Name	Trimethyl Borate
CAS Number	121-43-7
Molecular Formula	C3H9BO3
Molecular Weight	83.92 g/mol
Appearance	Colorless liquid
Odor	Pungent
Boiling Point	68°C
Melting Point	-15°C
Density	0.899 g/cm³
Flash Point	8°C
Solubility	Miscible with organic solvents; insoluble in water
Refractive Index	1.397
Chemical Stability	Stable under normal conditions

Applications:

Chemical Synthesis: Used as a reagent in the production of esters and other borates.
Polymerization: Acts as a catalyst in certain polymerization reactions.
Specialty Chemicals: Employed in the manufacture of various organoboron compounds.

Safety and Handling:

Trimethyl borate is flammable and toxic. It should be stored in a cool, dry place away from heat, sparks, and open flames. Proper personal protective equipment (PPE), including gloves and safety goggles, should be used when handling this chemical. Adequate ventilation is necessary to prevent inhalation of vapors. For detailed safety instructions, refer to the Material Safety Data Sheet (MSDS) for Trimethyl Borate.

For further details or specific usage instructions, please consult the technical datasheet or contact the supplier directly.

Company Introduction

Tianjin Shengtai Chemical Co., Ltd. -- Suntechemical

Suntechemical is a professional supplier of fine chemicals and one of northern China's largest suppliers. The company has professional warehouses in Tianjin, Shanghai, Shandong, Nanjing, and other places, with a sufficient supply of goods. Now the United States, the European Union, Japan, Canada, and other countries have more than 100 customers to establish stable trade relations.

Products are widely used in medicine, pesticides, food, oilfield and water treatment, daily chemicals and cosmetics, surfactants, inks, rubber, cement additives, coatings, polyurethanes, adhesives, solvents, additives, leather, textile, printing and dyeing, building materials, metal processing and other fine chemical-related industries.

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Storage

The company has professional warehouses in Tianjin, Shanghai, Shandong, Nanjing, and other places, with a sufficient supply of goods.

Stored in a dry and ventilated warehouse.

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Packing&Shipping

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Suntechemical Advantage

Professional warehouse
Three major production bases in North China

Stock all year round
Adequate existing goods supply

Timely delivery
24/7 response to global customers

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Certificate

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Customer Visit

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FAQ

Q1: May I get some samples from your side?
Re: Yes, of course. We’d like to provide a 10-1000 g free sample to you, which depends on the product you need. For freight, your side needs to bear, but we will refund you after you place a bulk order.

Q2: What is your MOQ?
Re: Usually our MOQ is 1 kg, but sometimes it also is flexible and depends on the product.

Q3: What kinds of payment are available for you?
Re: We recommend you pay by T/T or L/C, and you can also choose to pay by PayPal, or MoneyGram if the value is less than USD 3000. Besides, sometimes we also accept Bitcoin.

Q4: How about lead time?
Re: For small quantities, the goods will be sent to you within 1-3 working days after payment. For larger quantities, the goods will be sent to you within 3-7 working days after payment.

Q5: How long I can get my goods after payment?
Re: For small quantities, we will deliver by courier(FedEx, TNT, DHL, etc) and it usually will take 3-7 days to your side. If you want to use a special line or air shipment, we can also provide and it will cost about 1-3 weeks. For large quantities, shipment by sea will be better. For transport time, it takes 3-40 days, which depends on your location.

Q6: What’s your after-sales service?
Re: We will inform you of the progress of the order, such as product preparation, declaration, transportation follow-up, customs clearance assistance, etc.

Certificates

Basic Info

Product Name:

Trimethyl borate

Other Name:

Boric acid (H3BO3),trimethyl ester;Methyl borate ((MeO)3B);Borester O;Trimethoxyborane;Trimethoxyborine;Trimethyl borate;Boric acid trimethyl ester;Trimethoxyboron;Boron trimethoxide;TMB;NSC 777;Trimethylborate;TMB-R;31649-91-9;63156-11-6

CAS No.:

121-43-7

Molecular Formula:

C3H9BO3

InChIKeys:

InChIKey=WRECIMRULFAWHA-UHFFFAOYSA-N

Molecular Weight:

103.91

Exact Mass:

103.91

BRN:

1697939

EC Number:

204-468-9

UNII:

82U64J6F5N

ICSC Number:

0593

NSC Number:

777

UN Number:

2416

DSSTox ID:

DTXSID0037738

Color/Form:

Colorless, moisture-sensitive liquid; fumes in air

HScode:

29209085

Categories:

Bulk Drug Intermediates

Characteristics

PSA:

27.7

XLogP3:

-1.9

Appearance:

Colorless Liquid

Density:

0.915 g/cm³

Melting Point:

-29.3 °C

Boiling Point:

67-68 °C

Flash Point:

8 °F

Refractive Index:

n 20/D 1.358(lit.)

Water Solubility:

Solubility in water: reaction.;Miscible with tetrahydrofuran, ether, isoporpylamine, hexane and methanol.

Storage Conditions:

Flammables area

Vapor Pressure:

Vapour pressure, kPa at 25°C: 18

Vapor Density:

3.59 (vs air)

Toxicity:

Oral-Rat LD50: 13000 mg/kg; Oral-Mouse LD50: 1290 mg/kg

Flammability characteristics:

Inflammable in case of fire, high temperature and oxidant; produces toxic flammable boride gas in contact with water

Explosive limit:

Reacts with oxidants causing fire and explosion hazard. /table/

Experimental Properties:

Stable in the absence of moisture; hydrolyzes in the presence of water to methanol and boric acid. ... Forms azeotrope with methanol: 70% trimethyl borate and 30% methanol|Decomposes in water.|Dissolves in water with hydrolysis to form boric acid and the corresponding alcohol or phenol /Boric acid esters/

Air and Water Reactions:

Highly flammable. Rapidly decomposes in water.

Reactive Group:

Esters, Sulfate Esters, Phosphate Esters, Thiophosphate Esters, and Borate Esters

Reactivity Alerts:

Highly Flammable

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.

Physical Dangers:

The vapour is heavier than air and may travel along the ground; distant ignition possible.

See More Trimethyl borate Properties 

Hazard Identification

Classification of the substance or mixture

Flammable liquids, Category 3

Acute toxicity - Category 4, Dermal

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Warning
Hazard statement(s)	H226 Flammable liquid and vapour H312 Harmful in contact with skin
Prevention	P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P233 Keep container tightly closed. P240 Ground and bond container and receiving equipment. P241 Use explosion-proof [electrical/ventilating/lighting/...] equipment. P242 Use non-sparking tools. P243 Take action to prevent static discharges. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response	P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse affected areas with water [or shower]. P370+P378 In case of fire: Use ... to extinguish. P302+P352 IF ON SKIN: Wash with plenty of water/... P317 Get medical help. P321 Specific treatment (see ... on this label). P362+P364 Take off contaminated clothing and wash it before reuse.
Storage	P403+P235 Store in a well-ventilated place. Keep cool.
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Fireproof. Separated from strong oxidants and strong acids. Dry.

See More Trimethyl borate Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
Epichlorohydrin,Epoxy resin,Calcium chloride,2-Hydroxyethyl acrylate (HEA),2-HYDROXYPROPYLACRYLATE(HPA),2-Hydroxy Ethyl Methacrylate (HEMA)

Location:
C5-517, Magnetic Capital International Central Avenue, Nankai District, Tianjin, China 300381

Payment Terms:
TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance

Average lead Time:
10

Total Annual Revenue:
$10 million-$25 million

Total Employees:
51-100

Year of Establishment:
2023

Certifications:
Hazardous chemicals business license,Hazardous chemicals business license

Suntechemical located in Tianjin is a professional supplier of fine chemicals. We are manufacturer and trader. Since 2001, we have been acting as a leading supplier of specialty and fine chemicals in China. We handle a wide range of chemicals, including detergent raw materials, food additives, water treatment chemicals as well as textile and tanning-making chemicals. Relying on our professional supply chain management ability, we have established a stable cooperative relationship with domestic and foreign famous company such as DOW CHEMICALS, BASF, HUNTSMAN, TOSOH, DELAMINE, Yangzi Petrochemicals BASF, SINOPEC Group, Shanghai Yuanbang Chemical Industry, Jiangsu Sanmu, etc.

Company Profile

Inquiry History

15 Inquiries

Country	Product	Purchase Quantity	Date Posted
India	Trimethyl Borate CAS No.: 121-43-7	1 20' Fcl	Jun 10, 2025
India	Trimethyl borate	15.00 L	Oct 28, 2024
United States	Trimethyl borate	55 G	May 7, 2024
India	Trimethyl borate	1 MT	Nov 20, 2023
India	Trimethyl Borate	14 20' Fcl	Apr 1, 2025
Indonesia	Trimethyl borate	2000 L	Sep 11, 2024
Poland	Trimethyl borate	1000 KG	Nov 22, 2023
India	(E)-3,7-dimethylocta-2,6-dien-1-ol ) (Geraniol)	10.00 KG	Oct 28, 2024
India	Phloroglucinol (Tryhydroxyphenol)	7.50 KG	Oct 28, 2024
India	RuPhos	500.00 G	Oct 28, 2024
India	(5-bromopent-1-ene )	5.00 KG	Oct 28, 2024
India	BF3.Et2O	2.50 L	Oct 28, 2024
India	DBU / 1,8-Diazabicyclo[5.4.0] undec-7-ene	2.50 KG	Oct 28, 2024
India	PdCl2(dppf)2	350.00 G	Oct 28, 2024
India	Phenyl triflimide	7.00 KG	Oct 28, 2024

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