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Silicates, borates and other salts

Strontium phosphide

Also known as Strontium phosphide (Sr3P2), Phosphure de strontium, Strontium monophosphide

CAS 12504-16-4Formula P2Sr3Molar mass 324.81 g/molEC 235-678-9
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Strontium phosphide chemical structure, P2Sr3, CAS 12504-16-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Solid
Melting point
Decomposes
HS code
285390
Category
Silicates, borates and other salts
UN number
UN 2013
Illustrative photo, a shrink wrapped pallet of kraft paper sacks in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Strontium phosphide?

Plain description, key identifiers and synonyms

Strontium phosphide is a solid which will evolve flammable and toxic gases on contact with water. It is a highly reactive material used as a laboratory reagent and in the manufacture of chemically reactive devices.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tristrontium bis(phosphorus(3-))
CAS number
12504-16-4Other or deprecated CAS: 12504-13-1
EC number
235-678-9
Molecular formula
P2Sr3
InChIKey
ATAJSUOOOWSVGL-UHFFFAOYSA-N
InChI
InChI=1S/2P.3Sr/q2*-3;3*+2
SMILES (canonical and isomeric)
[P-3].[P-3].[Sr+2].[Sr+2].[Sr+2]

Synonyms

  • Strontium phosphide (Sr3P2)
  • Phosphure de strontium
  • Strontium monophosphide
  • Phosphure de strontium (French)
  • Tristrontium diphosphide
  • Strontium phosphide (SrP)
  • tristrontium, phosphorus(3-)

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

Appearance
Solidexp.
Melting point
Decomposesexp.

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
324.81 g/molcalc.
Exact mass
325.6644 Dacalc.
LogP (octanol/water)
0.58calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
5calc.

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 2013
Transport hazard class
4.3

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

Strontium phosphide suppliers

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Strontium phosphide 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

Used as a laboratory reagent and in the manufacture of chemically reactive devices.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Inactive 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 Strontium phosphide is traded under.

HS 2853.90Indicative HS code

Phosphides, whether or not chemically defined, excluding ferrophosphorus, other, other

World exports in 2024
$2.45B
−33.6% vs 2023, imports $816M
2019 to 2024
Top exporters
  1. China68.4%
  2. Israel8.1%
  3. United States4.9%
Top importers
  1. United States19.3%
  2. Japan17.9%
  3. China13.4%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Strontium phosphide, based on the data on this page

What is Strontium phosphide?

Strontium phosphide is a solid which will evolve flammable and toxic gases on contact with water. It is a highly reactive material used as a laboratory reagent and in the manufacture of chemically reactive devices.

What is the CAS number of Strontium phosphide?

The CAS registry number of Strontium phosphide is 12504-16-4. Other or deprecated CAS numbers: 12504-13-1.

What is the molecular formula and weight of Strontium phosphide?

The molecular formula of Strontium phosphide is P2Sr3 and its molar mass is 324.81 g/mol.

What is Strontium phosphide used for?

Used as a laboratory reagent and in the manufacture of chemically reactive devices.

Is Strontium phosphide hazardous?

No GHS hazard classification for Strontium phosphide 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 Strontium phosphide?

Strontium phosphide is usually classified under HS code 285390 (Phosphides, whether or not chemically defined, excluding ferrophosphorus, other…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Strontium phosphide?

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

What is the price of Strontium phosphide?

Suppliers quote Strontium phosphide 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 Strontium phosphide

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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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