Basic Description

Synonyms	TRIMETHYL BORATE \| 121-43-7 \| Trimethoxyborane \| Methyl borate \| Trimethoxyboron \| trimethylborate \| Boric acid trimethyl ester \| Boric acid, trimethyl ester \| Trimethoxyborine \| Borester O \| Boric acid (H3BO3), trimethyl ester \| B(OCH3)3 \| NSC 777 \| (MeO)3B \| B(OMe)3 \| Trimethylester
Specifications & Purity	≥99.997% metals basis
Storage Temp	Room temperature,Argon charged,Desiccated
Shipped In	Normal

Taxonomic Classification

Taxonomy Tree

Kingdom Organic compounds
- Superclass Organic oxygen compounds
  - Class Organic oxoanionic compounds

Kingdom	Organic compounds
Superclass	Organic oxygen compounds
Class	Organic oxoanionic compounds
Subclass	Not available
Intermediate Tree Nodes	Not available
Direct Parent	Organic oxoanionic compounds
Alternative Parents	Organic metalloid salts Organooxygen compounds Hydrocarbon derivatives
Molecular Framework	Aliphatic acyclic compounds
Substituents	Organic borate - Organic metalloid salt - Hydrocarbon derivative - Organic salt - Organooxygen compound - Aliphatic acyclic compound
Description	This compound belongs to the class of organic compounds known as organic oxoanionic compounds. These are organic compounds containing an oxoanion.
External Descriptors	borate esters
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61. DOI: 10.1186/s13321-016-0174-y

Names and Identifiers

IUPAC Name	trimethyl borate
INCHI	InChI=1S/C3H9BO3/c1-5-4(6-2)7-3/h1-3H3
InChIKey	WRECIMRULFAWHA-UHFFFAOYSA-N
Smiles	B(OC)(OC)OC
Isomeric SMILES	B(OC)(OC)OC
WGK Germany	1
RTECS	ED5600000
UN Number	2416
Packing Group	II
Molecular Weight	103.91
Beilstein	1697939
Reaxy-Rn	1697939

Certificates（CoA,COO,BSE/TSE and Analysis Chart)

C of A & Other Certificates(BSE/TSE, COO):

Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

12 results found

Lot Number	Certificate Type	Date	Item
E2527169	Certificate of Analysis	Jun 10, 2025	T111489
F2513024	Certificate of Analysis	May 12, 2025	T111489
F2504162	Certificate of Analysis	May 12, 2025	T111489
G2131331	Certificate of Analysis	May 07, 2025	T111489
E2420362	Certificate of Analysis	Apr 30, 2024	T111489
J2318586	Certificate of Analysis	Sep 11, 2023	T111489
J2318585	Certificate of Analysis	Sep 11, 2023	T111489
J2412012	Certificate of Analysis	Jun 28, 2023	T111489
G2311219	Certificate of Analysis	Jun 28, 2023	T111489
G2311222	Certificate of Analysis	Jun 28, 2023	T111489
G2311216	Certificate of Analysis	Jun 28, 2023	T111489
K2218121	Certificate of Analysis	Nov 22, 2022	T111489

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Chemical and Physical Properties

Sensitivity	moisture sensitive
Refractive Index	1.3562-1.3582
Flash Point(°F)	17.6 °F
Flash Point(°C)	-8℃
Boil Point(°C)	67-69°C
Melt Point(°C)	-29°C
Molecular Weight	103.920 g/mol
XLogP3
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	3
Exact Mass	104.064 Da
Monoisotopic Mass	104.064 Da
Topological Polar Surface Area	27.700 Å²
Heavy Atom Count	7
Formal Charge	0
Complexity	31.700
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
The total count of all stereochemical bonds	0
Covalently-Bonded Unit Count	1

Documents & Articles

ALD and CVD: Differences between Precision and High-Throughput Thin Film Deposition

Categories: Technical articles

Tags:

Organic Reaction Toolbox Chemical vapor deposition CVD CVD precursors ALD precursors Atomic layer deposition ALD

Citations of This Product

How to Cite Aladdin Scientific Products?

1. Longli Ma, Xuanyang Li, Jian Tan, Zhan Fang, Zhu Liu, Yuan Wang, Chuming Ye, Pengshu Yi, Mingxin Ye, Jianfeng Shen. (2023) Anion-Immobilized Gel Polymer Electrolyte with a High Ion Transference Number for High-Performance Lithium/Sodium Metal Batteries. ACS Applied Materials & Interfaces, 15 (49): (57201–57210).
2. Chaoze Liu, Zheng Zhou, Jiawei Ji, Yaxin Gu, Song Yan, Shaobo Yang, Rongjuan Zhang, Zhenya Liu, Yanming Xue, Chengchun Tang. (2023) Controllable preparation of boron nitride microspheres and their epoxy-based thermoconductive composites. CERAMICS INTERNATIONAL, 49 (27138).
3. Zexia Li, Jingwen Yang, Hejun Gao, Jiaxiao Qiao, Wei Qiao, Peng Wang, Jun Zhang, Chengchun Tang, Yanming Xue. (2023) Boron Nitride Microspheres via Pyrolysis of Polymerized Precursors. ACS Omega, 8 (17): (15239–15248).
4. Dewei Qiu, Ping Zhou, Jiawei Kang, Zhijun Chen, Zhiyong Xu, Hanwen Yang, Jun Tao, Fanrong Ai. (2022) ZnO nanoparticle modified chitosan/borosilicate bioglass composite scaffold for inhibiting bacterial infection and promoting bone regeneration. Biomedical Materials, 17 (6): (65023).
5. Binghua Zhou, Ying Zhou, Lujie Lai, Ziling Chen, Jiajia Li, Yunliang Jiang, Jian Liu, Zhipeng Wang, Zhigang Xue. (2021) Fabrication of Borate-Based Porous Polymer Electrolytes Containing Cyclic Carbonate for High-Performance Lithium Metal Batteries. ACS Applied Energy Materials, 4 (9): (9582–9593).
6. Jianhui Li, Yuqing Liao, Weizhen Fan, Zifei Li, Guanjie Li, Qiankui Zhang, Lidan Xing, Mengqing Xu, Weishan Li. (2020) Significance of Electrolyte Additive Molecule Structure in Constructing Robust Interphases on High-Voltage Cathodes. ACS Applied Energy Materials, 3 (3): (3049–3058).
7. Kuan Dai, Cheng Ma, Yiming Feng, Liangjun Zhou, Guichao Kuang, Yun Zhang, Yanqing Lai, Xinwei Cui, Weifeng Wei. (2019) A borate-rich, cross-linked gel polymer electrolyte with near-single ion conduction for lithium metal batteries. Journal of Materials Chemistry A, 7 (31): (18547-18557).
8. Li Erpeng, Li Wenqin, Li Linchang, Zhang Hao, Shen Chao, Wu Zihua, Zhang Weiwei, Xu Xiaojia, Tian He, Zhu Wei-Hong, Wu Yongzhen. (2019) Efficient p-i-n structured perovskite solar cells employing low-cost and highly reproducible oligomers as hole transporting materials. Science China-Chemistry, 62 (6): (767-774).
9. Linfeng Chen, Xike Tian, Yong Li, Chao Yang, Liqiang Lu, Zhaoxin Zhou, Yulun Nie. (2019) An AIE dye based smartphone and LDA integrated portable, intelligent and rapid detection system as trace water indicator and cyanide detector. DYES AND PIGMENTS, 166 (1).
10. Jinfang Zhang, Cheng Ma, Hua Hou, Xiaofeng Li, Libao Chen, Douglas G. Ivey, Weifeng Wei. (2018) A star-shaped solid composite electrolyte containing multifunctional moieties with enhanced electrochemical properties for all solid-state lithium batteries. JOURNAL OF MEMBRANE SCIENCE, 552 (107).
11. Wen-Ming Wan, Shun-Shun Li, Dong-Ming Liu, Xin-Hu Lv, Xiao-Li Sun. (2017) Synthesis of Electron-Deficient Borinic Acid Polymers with Multiresponsive Properties and Their Application in the Fluorescence Detection of Alizarin Red S and Electron-Rich 8-Hydroxyquinoline and Fluoride Ion: Substituent Effects. MACROMOLECULES, 50 (17): (6872–6879).
12. Guilong Zhang, Shiyao Lu, Junchao Qian, Kai Zhong, Jianming Yao, Dongqing Cai, Zhiliang Cheng, Zhengyan Wu. (2015) Magnetic Relaxation Switch Detecting Boric Acid or Borate Ester through One-Pot Synthesized Poly(vinyl alcohol) Functionalized Nanomagnetic Iron Oxide. ACS Applied Materials & Interfaces, 7 (30): (16837–16841).
13. Hongxia Peng, Yiwang Chen, Lie Chen, Xiaohui He, Fan Li. (2010) Luminescent mesogen jacketed poly(1-alkyne) bearing lateral terphenyl with hexyloxy tail. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 48 (24): (5679-5692).
14. Qiyue Wang, Sirui Cui, Dao Shi, Pan Tao, Chencheng Zhang, Fang Wang, Peihua Lin, Fangyuan Li, Daishun Ling. (2024) A Neuronal Signal Sorting and Amplifying Nanosensor for EEG-Concordant Imaging-Guided Precision Epilepsy Ablation. ADVANCED MATERIALS, (2408864).
15. Jie Chen, Rui Feng, Peng Su, Tong Zhou, Lijie Dong. (2025) Highly linear wearable ionic gel based on self-assembled discoid liquid crystal towards human motion monitoring. Journal of Materials Chemistry C,
16. Xing-Ying Zheng, Tao Li, Hua-Wen Cai, Xin-Hui Wang, Xiao-Li Sun, Wen-Ming Wan. (2024) Polymerization-induced emission of borinic acid towards stimuli-responsive luminescent polymers. POLYMER, 300 (126996).
17. Sen Xue, Qian Wei, Rui Zhang, Tianyu Zhang, Gaigai Duan, Xiaoshuai Han, Kunming Liu, Jingquan Han, Shuijian He, Shaohua Jiang. (2024) Spiroborate-based three dimensional covalent organic framework for effective adsorption and separation of organic dyes. SEPARATION AND PURIFICATION TECHNOLOGY, 341 (126941).
18. Jiawei Li, Junren Xiang, Ge Yi, Zhijia Hu, Xiao Liu, Rong Chen. (2024) Stabilization of the surface and lattice structure for LiNi0.83Co0.12Mn0.05O2via B2O3 atomic layer deposition and post-annealing. Energy Advances, 3 (7): (1688-1696).

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SKU	Size	Availability	Price
T111489-10ml	10ml	3	$16.90
T111489-50ml	50ml	2	$59.90
T111489-250ml	250ml	Available within 4-8 weeks(?) Items will be manufactured post-order and can take 4-8 weeks. Thank you for your patience!	$229.90

Trimethyl borate - 99.997% metals basis, high purity , CAS No.121-43-7