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Sulfur and phosphorus compounds

Dibutyl phosphonite

Also known as dibutylphosphonous acid, Phosphonous acid, dibutyl ester

CAS 30653-71-5Formula C8H19O2PMolar mass 178.21 g/molEC 250-273-7
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Dibutyl phosphonite chemical structure, C8H19O2P, CAS 30653-71-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
30653-71-5
Formula
C8H19O2P
Molar mass
178.21 g/mol
EC number
250-273-7
HS code
292029
Category
Sulfur and phosphorus compounds

What is Dibutyl phosphonite?

Plain description, key identifiers and synonyms

Dibutyl phosphonite is a chemical substance with the molecular formula C8H19O2P and a molar mass of 178.21 g/mol. Its CAS registry number is 30653-71-5. The IUPAC name is dibutoxyphosphane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dibutoxyphosphane
CAS number
30653-71-5 CAS number cross-checked
EC number
250-273-7
Molecular formula
C8H19O2P
UNII
CQK9V8YJS7
InChIKey
YQVYPOYAWKCVIZ-UHFFFAOYSA-N
InChI
InChI=1S/C8H19O2P/c1-3-5-7-9-11-10-8-6-4-2/h11H,3-8H2,1-2H3
SMILES (canonical and isomeric)
CCCCOPOCCCC

Synonyms

  • dibutylphosphonous acid
  • Phosphonous acid, dibutyl 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
178.21 g/molcalc.
Exact mass
178.1123 Dacalc.
LogP (octanol/water)
3.13calc.
Topological polar surface area
18.46 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
8calc.
Heavy atoms
11calc.
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.

Dibutyl phosphonite suppliers

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Dibutyl phosphonite price

Indicative price range per kg from live supplier offers

No published prices right now

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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 Dibutyl phosphonite 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 Dibutyl phosphonite is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Dibutyl phosphonite, based on the data on this page

What is Dibutyl phosphonite?

Dibutyl phosphonite is a chemical substance with the molecular formula C8H19O2P and a molar mass of 178.21 g/mol. Its CAS registry number is 30653-71-5. The IUPAC name is dibutoxyphosphane.

What is the CAS number of Dibutyl phosphonite?

The CAS registry number of Dibutyl phosphonite is 30653-71-5.

What is the molecular formula and weight of Dibutyl phosphonite?

The molecular formula of Dibutyl phosphonite is C8H19O2P and its molar mass is 178.21 g/mol.

What is Dibutyl phosphonite used for?

Known uses and roles of Dibutyl phosphonite include building blocks in research and laboratory.

Is Dibutyl phosphonite hazardous?

No GHS hazard classification for Dibutyl phosphonite 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 Dibutyl phosphonite?

Dibutyl phosphonite 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 Dibutyl phosphonite?

Post a free request on CompoundList and suppliers of Dibutyl phosphonite will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Dibutyl phosphonite?

Suppliers quote Dibutyl phosphonite 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 Dibutyl phosphonite

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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