CompoundList
Sign in
Aliphatic and alicyclic building blocks

Tributyl phosphite

Also known as Tri-n-butyl phosphite, Tributoxyphosphine, Phosphorous acid, tributyl ester

CAS 102-85-2Formula C12H27O3PMolar mass 250.32 g/molEC 203-061-3
GHS signal word: Warning. Pictograms: Harmful or irritant 7 suppliers listed
Get quotes Compare 7 suppliers
Tributyl phosphite chemical structure, C12H27O3P, CAS 102-85-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
102-85-2
Formula
C12H27O3P
Molar mass
250.32 g/mol
EC number
203-061-3
HS code
292029
Category
Aliphatic and alicyclic building blocks

What is Tributyl phosphite?

Plain description, key identifiers and synonyms

Tributyl phosphite is a chemical substance with the molecular formula C12H27O3P and a molar mass of 250.32 g/mol. Its CAS registry number is 102-85-2.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tributyl phosphite
CAS number
102-85-2 CAS number cross-checked
EC number
203-061-3
Molecular formula
C12H27O3P
UNII
498030B4AD
MDL number
MFCD00009437
InChIKey
XTTGYFREQJCEML-UHFFFAOYSA-N
InChI
InChI=1S/C12H27O3P/c1-4-7-10-13-16(14-11-8-5-2)15-12-9-6-3/h4-12H2,1-3H3
SMILES (canonical and isomeric)
CCCCOP(OCCCC)OCCCC

Synonyms

  • Tri-n-butyl phosphite
  • Tributoxyphosphine
  • Phosphorous acid, tributyl ester
  • Tributylfosfit
  • Butyl phosphite ((C4H9O)3P)
  • Phosphorus tributoxide (p(OBu)3)
  • JP 304
  • TBPi cpd
  • tributylphosphite
  • Phosphorous Acid Tributyl Ester
  • 1-Butanol, 1,1',1''-phosphinidynetri-
  • tri-n-butylphosphite
  • Syn-O-Ad P-312
  • 4-01-00-01527 (Beilstein Handbook Reference)
  • Phosphorous acid,tributyl ester
  • Tributyl phosphite, 90%, technical grade

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
250.32 g/molcalc.
Exact mass
250.1698 Dacalc.
LogP (octanol/water)
4.66calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
12calc.
Heavy atoms
16calc.
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

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (11)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P501Dispose of contents and container in accordance with local regulations.

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

Full safety data and first aid

Tributyl phosphite suppliers

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

All 7 suppliers
7 of 7 offers

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

7 suppliers in 2 countries

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

Tributyl 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

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Tributyl 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 Tributyl phosphite is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Tributyl phosphite?

Tributyl phosphite is a chemical substance with the molecular formula C12H27O3P and a molar mass of 250.32 g/mol. Its CAS registry number is 102-85-2.

What is the CAS number of Tributyl phosphite?

The CAS registry number of Tributyl phosphite is 102-85-2.

What is the molecular formula and weight of Tributyl phosphite?

The molecular formula of Tributyl phosphite is C12H27O3P and its molar mass is 250.32 g/mol.

What is Tributyl phosphite used for?

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

Is Tributyl phosphite hazardous?

Tributyl phosphite carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, harmful to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Tributyl phosphite?

Tributyl 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 Tributyl phosphite?

CompoundList lists 7 suppliers of Tributyl phosphite in United States and 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 Tributyl phosphite?

Suppliers quote Tributyl 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 Tributyl phosphite

Get quotes for Tributyl 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 Tributyl 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 Tributyl 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/tributyl-phosphite-102-85-2" title="Tributyl 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

7 suppliers
Free quotes, contact stays private
Get quotes