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Sulfur and phosphorus compounds

Methyl phosphate

Also known as methyl phosphate(2-), Methylphosphoric acid, methyl phosphate dianion

CAS 7361-70-8Formula CH3O4P-2Molar mass 110.01 g/molEC 811-100-6
GHS signal word: Danger. Pictograms: Corrosive
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Methyl phosphate chemical structure, CH3O4P-2, CAS 7361-70-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
7361-70-8
Formula
CH3O4P-2
Molar mass
110.01 g/mol
EC number
811-100-6
HS code
291990
Category
Sulfur and phosphorus compounds

What is Methyl phosphate?

Plain description, key identifiers and synonyms

Methyl phosphate(2-) is dianion of methyl phosphate arising from deprotonation of both OH groups of the phosphate. It has a role as an epitope and a phosphoantigen. It is a conjugate base of a methyl dihydrogen phosphate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
methyl phosphate
CAS number
7361-70-8
EC number
811-100-6
Molecular formula
CH3O4P-2
InChIKey
CAAULPUQFIIOTL-UHFFFAOYSA-L
InChI
InChI=1S/CH5O4P/c1-5-6(2,3)4/h1H3,(H2,2,3,4)/p-2
SMILES (canonical and isomeric)
COP(=O)([O-])[O-]

Synonyms

  • methyl phosphate(2-)
  • Methylphosphoric acid
  • methyl phosphate dianion
  • methyl phosphate disodium salt, hexahydrate
  • Phosphoric acid, monomethyl ester, ion(2-)

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
110.01 g/molcalc.
Exact mass
109.978 Dacalc.
LogP (octanol/water)
-1.54calc.
Topological polar surface area
72.42 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
1calc.
Heavy atoms
6calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
-2calc.
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
Danger
GHS05: Corrosive
Corrosive

Hazard statements

  • H290May be corrosive to metals.
  • H314Causes severe skin burns and eye damage.
  • H318Causes serious eye damage.
Precautionary statements (17)
  • P234Keep only in original packaging.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P390Absorb spillage to prevent material damage.
  • P405Store locked up.
  • P406Store in a corrosion resistant container with a resistant inner liner.
  • 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

Methyl phosphate suppliers

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Methyl phosphate 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

Roles

  • antigen
  • epitope
  • phosphoantigen

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 Methyl phosphate is traded under.

HS 2919.90Indicative HS code

Phosphoric, and their salts, including lactophosphates, their halogenated, sulphonated, nitrated…

World exports in 2024
$940M
−0.7% vs 2023, imports $863M
2019 to 2024
Top exporters
  1. China55.6%
  2. Germany10.6%
  3. Italy6.2%
Top importers
  1. United States15.8%
  2. South Korea10.1%
  3. Germany6.4%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Methyl phosphate, based on the data on this page

What is Methyl phosphate?

Methyl phosphate(2-) is dianion of methyl phosphate arising from deprotonation of both OH groups of the phosphate. It has a role as an epitope and a phosphoantigen. It is a conjugate base of a methyl dihydrogen phosphate.

What is the CAS number of Methyl phosphate?

The CAS registry number of Methyl phosphate is 7361-70-8.

What is the molecular formula and weight of Methyl phosphate?

The molecular formula of Methyl phosphate is CH3O4P-2 and its molar mass is 110.01 g/mol.

What is Methyl phosphate used for?

Known uses and roles of Methyl phosphate include building blocks in research and laboratory, antigen, epitope and phosphoantigen.

Is Methyl phosphate hazardous?

Methyl phosphate carries the GHS signal word "Danger". Main hazards: may be corrosive to metals, causes severe skin burns and eye damage, causes serious eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Methyl phosphate?

Methyl phosphate is usually classified under HS code 291990 (Phosphoric esters and their salts, including lactophosphates, their halogenated…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Methyl phosphate?

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What is the price of Methyl phosphate?

Suppliers quote Methyl phosphate 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 Methyl phosphate

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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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