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Silicates, borates and other salts

Iron phosphide

Also known as Ferrophosphide, Ferrophos HRS 2131, Ferrophos HRS 2132

CAS 12751-22-3Formula FePMolar mass 86.82 g/molEC 234-682-8
GHS signal word: Warning. Pictograms: Harmful or irritant 1 supplier listed
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Iron phosphide chemical structure, FeP, CAS 12751-22-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
12751-22-3
Formula
FeP
Molar mass
86.82 g/mol
Physical form
Crystals
HS code
285390
Category
Silicates, borates and other salts
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Iron phosphide?

Plain description, key identifiers and synonyms

Iron phosphide is a chemical substance with the molecular formula FeP and a molar mass of 86.82 g/mol. Its CAS registry number is 12751-22-3. The IUPAC name is iron(3+), phosphorus(3-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
iron(3+), phosphorus(3-)
CAS number
12751-22-3 CAS number cross-checkedOther or deprecated CAS: 12023-53-9, 26508-33-8, 8049-19-2
EC numbers
234-682-8, 235-798-1, 247-751-2, 617-089-2, 641-089-1, 921-086-4
Molecular formula
FeP
InChIKey
JNRQHASIGICJBU-UHFFFAOYSA-N
InChI
InChI=1S/Fe.P/q+3;-3
SMILES (canonical and isomeric)
[P-3].[Fe+3]

Synonyms

  • Ferrophosphide
  • Ferrophos HRS 2131
  • Ferrophos HRS 2132
  • Iron phosphide (Fe3P)
  • iron(3+) ion phosphanetriide
  • ferric phosphorus(-3) anion
  • iron(3+), phosphorus(3-)
  • Triiron phosphide

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
86.82 g/molcalc.
Exact mass
86.9087 Dacalc.
LogP (octanol/water)
0.86calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.

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.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • 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.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • 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

Iron phosphide suppliers

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Where suppliers are based

1 supplier in 1 country

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Iron phosphide 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

Industrial uses: Stabilizing agent.

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

Frequently asked questions

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

What is Iron phosphide?

Iron phosphide is a chemical substance with the molecular formula FeP and a molar mass of 86.82 g/mol. Its CAS registry number is 12751-22-3. The IUPAC name is iron(3+), phosphorus(3-).

What is the CAS number of Iron phosphide?

The CAS registry number of Iron phosphide is 12751-22-3. Other or deprecated CAS numbers: 12023-53-9, 26508-33-8, 8049-19-2.

What is the molecular formula and weight of Iron phosphide?

The molecular formula of Iron phosphide is FeP and its molar mass is 86.82 g/mol.

What is Iron phosphide used for?

Industrial uses: Stabilizing agent.

Is Iron phosphide hazardous?

Iron phosphide carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Iron phosphide?

Iron 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 Iron phosphide?

CompoundList lists 1 supplier of Iron phosphide in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Iron phosphide?

Suppliers quote Iron 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 Iron 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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