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Tripropyl borate

Also known as: Boric acid tripropyl ester, Boric acid (H3BO3), tripropyl ester, Boron propoxide, Tripropoxyborane, Tripropyl orthoborate, Propyl borate, Propyl orthoborate, (n-C3H7O)3B, n-Propyl borate

Tripropyl borate (CAS 688-71-1) 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 188.07200 g/mol. Key properties include a melting point of <0ºC, a boiling point of 175-177 °C(lit.), a density of 0.857 g/mL at 25 °C(lit.) and a flash point of 32.2 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
688-71-1
Jingsj CID
J-889824-6
Molecular Formula
C9H21BO3
Molecular Weight
188.07200 g/mol
Category
Organic Acids
Last updated
11/3/2026

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Physicochemical Properties

Melting Point<0ºC
Boiling Point175-177 °C(lit.)
Density0.857 g/mL at 25 °C(lit.)
Flash Point32.2 °C
Exact Mass188.15800
PSA27.69000
LogP2.25110
Refractive Indexn20/D 1.395(lit.)

Customs & Trade Information

HS Code2920909090
Summary2920909090 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 Tripropyl borate?

The CAS number of Tripropyl borate is 688-71-1.

What are the molecular formula and molecular weight of Tripropyl borate?

Tripropyl borate has molecular formula C9H21BO3 and molecular weight 188.07200 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Tripropyl borate (CAS 688-71-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-889824-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.