Triisopropyl borate
Also known as: Boric acid triisopropyl ester, Triisopropoxyborane, Boron isopropoxide, Isopropyl borate, Tri-i-Propylborate, tris(1-methylethyl) borate, Boric acid (HBO), tris(1-methylethyl) ester, MFCD00008872, EINECS 226-529-9
Triisopropyl borate (CAS 5419-55-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H21BO3 and a molecular weight of 188.072 g/mol. Key properties include a melting point of -59 °C, a boiling point of 140.0±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 10.0±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5419-55-6
- Jingsj CID
- J-42658-4
- Molecular Formula
- C9H21BO3
- Molecular Weight
- 188.072 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -59 °C |
|---|---|
| Boiling Point | 140.0±8.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 10.0±0.0 °C |
| Exact Mass | 188.158371 |
| PSA | 27.69000 |
| LogP | 4.09 |
| Vapor Pressure | 7.8±0.2 mmHg at 25°C |
| Refractive Index | 1.393 |
| Additional Property | decomposes |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
Customs & Trade Information
| 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% |
Frequently Asked Questions
What is the CAS number of Triisopropyl borate?
The CAS number of Triisopropyl borate is 5419-55-6.
What are the molecular formula and molecular weight of Triisopropyl borate?
Triisopropyl borate has molecular formula C9H21BO3 and molecular weight 188.072 g/mol.
Is Triisopropyl borate hazardous?
Triisopropyl borate has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour.
What are the upstream and downstream products of Triisopropyl borate?
For Triisopropyl borate, Upstream Products: Boric acid, Isopropanol, Ethylmagnesium bromide; Downstream Products: 2-Methoxy-3-(trifluoromethyl)phenylboronic acid, [1-(tert-butyl-dimethyl-silanyl)-5-fluoro-1H-indol-4-yl]boronic acid, Fluoranthene-3-boronic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Triisopropyl borate (CAS 5419-55-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42658-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.