CompoundList
Sign in
Aliphatic and alicyclic building blocks

Tripropyl phosphite

Also known as Phosphorous acid, tripropyl ester, Propyl phosphite, tri-, Phosphite, tripropyl-

CAS 923-99-9Formula C9H21O3PMolar mass 208.24 g/molEC 213-100-6
1 supplier listed
Get quotes See the supplier
Tripropyl phosphite chemical structure, C9H21O3P, CAS 923-99-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
923-99-9
Formula
C9H21O3P
Molar mass
208.24 g/mol
EC number
213-100-6
HS code
292029
Category
Aliphatic and alicyclic building blocks

What is Tripropyl phosphite?

Plain description, key identifiers and synonyms

Tripropyl phosphite is a chemical substance with the molecular formula C9H21O3P and a molar mass of 208.24 g/mol. Its CAS registry number is 923-99-9.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tripropyl phosphite
CAS number
923-99-9 CAS number cross-checked
EC number
213-100-6
Molecular formula
C9H21O3P
UNII
QI42R706XF
InChIKey
QOPBTFMUVTXWFF-UHFFFAOYSA-N
InChI
InChI=1S/C9H21O3P/c1-4-7-10-13(11-8-5-2)12-9-6-3/h4-9H2,1-3H3
SMILES (canonical and isomeric)
CCCOP(OCCC)OCCC

Synonyms

  • Phosphorous acid, tripropyl ester
  • Propyl phosphite, tri-
  • Phosphite, tripropyl-
  • Propyl phosphite ((pro)3p)
  • Phosphorous acid, tripropyl ester (8CI)
  • Phosphorous acid, tripropyl ester (8CI)(9CI)
  • phosphorous acid tripropyl ester

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
208.24 g/molcalc.
Exact mass
208.1228 Dacalc.
LogP (octanol/water)
3.49calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
9calc.
Heavy atoms
13calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Tripropyl phosphite suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

See the supplier

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

1 supplier in 1 country

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Tripropyl phosphite price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Tripropyl phosphite is traded under.

HS 2920.29Indicative HS code

Phosphite esters and their salts, their halogenated, sulphonated, nitrated or nitrosated…

World exports in 2024
$437M
+9.3% vs 2023, imports $367M
2019 to 2024
Top exporters
  1. China26.4%
  2. South Korea19.9%
  3. Germany12.8%
Top importers
  1. China10.9%
  2. Germany9.3%
  3. Switzerland * partner reported7.7%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Tripropyl phosphite is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Tripropyl phosphite, based on the data on this page

What is Tripropyl phosphite?

Tripropyl phosphite is a chemical substance with the molecular formula C9H21O3P and a molar mass of 208.24 g/mol. Its CAS registry number is 923-99-9.

What is the CAS number of Tripropyl phosphite?

The CAS registry number of Tripropyl phosphite is 923-99-9.

What is the molecular formula and weight of Tripropyl phosphite?

The molecular formula of Tripropyl phosphite is C9H21O3P and its molar mass is 208.24 g/mol.

What is Tripropyl phosphite used for?

Known uses and roles of Tripropyl phosphite include building blocks in research and laboratory.

Is Tripropyl phosphite hazardous?

No GHS hazard classification for Tripropyl phosphite is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Tripropyl phosphite?

Tripropyl phosphite is usually classified under HS code 292029 (Phosphite esters and their salts, their halogenated, sulphonated, nitrated or nitrosated…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Tripropyl phosphite?

CompoundList lists 1 supplier of Tripropyl phosphite in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Tripropyl phosphite?

Suppliers quote Tripropyl phosphite on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Tripropyl phosphite

Get quotes for Tripropyl phosphite

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Tripropyl phosphite
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Tripropyl phosphite with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/tripropyl-phosphite-923-99-9" title="Tripropyl phosphite structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Aliphatic and alicyclic building blocks or HS code 292029

1 supplier
Free quotes, contact stays private
Get quotes