Trimethyl borate

Modify Date: 2025-08-21 10:24:41

Trimethyl borate structure	Common Name	Trimethyl borate
	CAS Number	121-43-7	Molecular Weight	103.913
	Density	0.9±0.1 g/cm3	Boiling Point	67.5±0.0 °C at 760 mmHg
	Molecular Formula	C₃H₉BO₃	Melting Point	-34 °C
	MSDS	USA	Flash Point	-8.3±0.0 °C
	Symbol	GHS02, GHS07, GHS08	Signal Word	Danger

Name	trimethyl borate
Synonym	More Synonyms

Density	0.9±0.1 g/cm3
Boiling Point	67.5±0.0 °C at 760 mmHg
Melting Point	-34 °C
Molecular Formula	C₃H₉BO₃
Molecular Weight	103.913
Flash Point	-8.3±0.0 °C
Exact Mass	104.064476
PSA	27.69000
LogP	1.45
Vapour density	3.59 (vs air)
Vapour Pressure	157.1±0.1 mmHg at 25°C
Index of Refraction	1.335
Stability	Stable. Incompatible with oxidizing agents. Decomposes slowly in the presence of moisture, rapidly in water. Flammable.
Water Solubility	reacts

Trimethyl borate MSDS(Chinese)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: ED5600000

CHEMICAL NAME :: Boric acid, trimethyl ester

CAS REGISTRY NUMBER :: 121-43-7

BEILSTEIN REFERENCE NO. :: 1697939

LAST UPDATED :: 199710

DATA ITEMS CITED :: 12

MOLECULAR FORMULA :: C3-H9-B-O3

MOLECULAR WEIGHT :: 103.93

WISWESSER LINE NOTATION :: 1OBO1&O1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: AJOPAA American Journal of Ophthalmology. (Ophthalmic Pub. Co., 435 N. Michigan Ave., Suite 1415, Chicago, IL 60611) Series 3: V.1- 1918- Volume(issue)/page/year: 29,1363,1946 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 6140 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 14KTAK "Boron, Metallo-Boron Compounds and Boranes," Adams, R.M., ed., New York, John Wiley & Sons, Inc., 1964 Volume(issue)/page/year: -,693,1964

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1600 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 14KTAK "Boron, Metallo-Boron Compounds and Boranes," Adams, R.M., ed., New York, John Wiley & Sons, Inc., 1964 Volume(issue)/page/year: -,693,1964

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1290 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 14KTAK "Boron, Metallo-Boron Compounds and Boranes," Adams, R.M., ed., New York, John Wiley & Sons, Inc., 1964 Volume(issue)/page/year: -,693,1964

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 14KTAK "Boron, Metallo-Boron Compounds and Boranes," Adams, R.M., ed., New York, John Wiley & Sons, Inc., 1964 Volume(issue)/page/year: -,693,1964

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 1980 uL/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 23,95,1962

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 1600 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 14KTAK "Boron, Metallo-Boron Compounds and Boranes," Adams, R.M., ed., New York, John Wiley & Sons, Inc., 1964 Volume(issue)/page/year: -,693,1964 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 74430 No. of Facilities: 50 (estimated) No. of Industries: 3 No. of Occupations: 4 No. of Employees: 1090 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 74430 No. of Facilities: 192 (estimated) No. of Industries: 7 No. of Occupations: 7 No. of Employees: 4878 (estimated) No. of Female Employees: 369 (estimated)

Symbol	GHS02, GHS07, GHS08
Signal Word	Danger
Hazard Statements	H225-H312-H319-H360FD-H370
Precautionary Statements	P201-P210-P260-P302 + P352 + P312-P308 + P311-P337 + P313
Target Organs	Central nervous system, Eyes
Personal Protective Equipment	Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	F:Flammable;Xn:Harmful;
Risk Phrases	R11;R21
Safety Phrases	S16-S27-S36/37/39-S45-S25-S23-S2
RIDADR	UN 2416 3/PG 2
WGK Germany	3
RTECS	ED5600000
Packaging Group	II
Hazard Class	3
HS Code	2920909090

Precursor 9
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HS Code	2920909090
Summary	2920909090 esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

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Trimthyl borate

BORON METHOXIDE

EINECS 204-468-9

Methyl Borate

B(OCH3)3

TRIMETHYL BORATE FOR SYNTHESIS

Trimethyl borate

boric acid trimethyl ester

trimethyl boronate

Boric acid (HBO), trimethyl ester

trimethyl

trimethoxyborane

THALLIUM HYDROTRIS[3-(2-PYRIDYL)PYRAZOL-1-YL]BORATE

Trimethylborate

Borester O

Boric acid trimethyl ester,Methyl borate

Trimethoxyboron

C3H9BO3

MFCD00008346

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Trimethyl borate
Price: Check
Purity: 98.0%
Delivery: 10 Day
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Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Trimethyl borate
Price: ￥228.0/500ml ￥78.0/100ml
Purity: 98.0%
Delivery: 3 Day
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Trimethyl borate
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: Trimethyl borate
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Delivery: Inquiry
Contact: Anson
Email: info@tianfuchem.com

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Trimethyl borate

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