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Phosphates and phosphorus salts

Dibasic lead phosphite

Also known as Lead phosphite, dibasic, Lead dibasic phosphite, Dibasic lead metaphosphate

CAS 1344-40-7Formula H4O11P2Pb6Molar mass 1,485.17 g/mol
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Dibasic lead phosphite chemical structure, H4O11P2Pb6, CAS 1344-40-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1344-40-7
Formula
H4O11P2Pb6
Physical form
Crystals
HS code
283510
Category
Phosphates and phosphorus salts
UN number
UN 2989
Illustrative photo, drums, an IBC tote and sacks in a chemical warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Dibasic lead phosphite?

Plain description, key identifiers and synonyms

Lead phosphite, dibasic is a finely ground white crystalline solid. It is not soluble in water. It may be toxic by ingestion or skin absorption. The material can be readily ignited from exposure to heat or external sparks. When so ignited it burns vigorously and persistently.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
hydrogen phosphite, bis(lead(2+)), oxolead, hydrate
CAS number
1344-40-7
Molecular formula
H4O11P2Pb6
InChIKey
XTQIDVCLCLXOKX-UHFFFAOYSA-N
InChI
InChI=1S/2HO3P.H2O.4O.6Pb/c2*1-4(2)3;;;;;;;;;;;/h2*1H;1H2;;;;;;;;;;/q2*-2;;;;;;;;;;2*+2
SMILES (canonical and isomeric)
O.OP([O-])[O-].OP([O-])[O-].O=[Pb].O=[Pb].O=[Pb].O=[Pb].[Pb+2].[Pb+2]

Synonyms

  • Lead phosphite, dibasic
  • Lead dibasic phosphite
  • Dibasic lead metaphosphate
  • C.I. 77620
  • Lead hydroxide oxide phosphite (Pb3(OH)O(PO3)), hydrate (2:1)
  • Lead phosphite, (dibasic)
  • Lead phosphite
  • Hydrogen phosphite, lead(2+), oxolead, hydrate
  • Lead oxide phosphonate, hemihydrate
  • Lead phosphite, dibasic [UN2989] [Flammable solid]

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

Physical form
Crystalsexp.

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
1,485.17 g/molcalc.
Exact mass
1,489.7828 Dacalc.
LogP (octanol/water)
-7.73calc.
Topological polar surface area
232.5 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
10calc.
Rotatable bonds
0calc.
Heavy atoms
19calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
9calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms
UN number
UN 2989
Transport hazard class
4.1
Packing group
II

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

Dibasic lead phosphite suppliers

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Dibasic lead phosphite price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Functional uses

  • Heat stabilizer

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 Dibasic lead phosphite is traded under.

HS 2835.10Indicative HS code

Phosphinates (hypophosphites) and phosphonates (phosphites)

World exports in 2024
$168M
+1.4% vs 2023, imports $163M
2019 to 2024
Top exporters
  1. China69.2%
  2. United States6.5%
  3. Switzerland * partner reported4.5%
Top importers
  1. United States12.5%
  2. Germany10.9%
  3. Malaysia9.8%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Dibasic lead phosphite, based on the data on this page

What is Dibasic lead phosphite?

Lead phosphite, dibasic is a finely ground white crystalline solid. It is not soluble in water. It may be toxic by ingestion or skin absorption. The material can be readily ignited from exposure to heat or external sparks. When so ignited it burns vigorously and persistently.

Guides for buyers

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

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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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