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Acid, base and phase-transfer catalysts

Tomp-MC

Also known as Trioctylmethylphosphonium methylcarbonate, 30% in MeOH

CAS 1204316-79-9Formula C27H57O3PMolar mass 460.72 g/molEC 836-992-4
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Acute toxicity (severe), Serious health hazard
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Tomp-MC chemical structure, C27H57O3P, CAS 1204316-79-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1204316-79-9
Formula
C27H57O3P
Molar mass
460.72 g/mol
EC number
836-992-4
HS code
293149
Category
Acid, base and phase-transfer catalysts

What is Tomp-MC?

Plain description, key identifiers and synonyms

Tomp-MC is a chemical substance with the molecular formula C27H57O3P and a molar mass of 460.72 g/mol. Its CAS registry number is 1204316-79-9. The IUPAC name is methyl carbonate, methyl(trioctyl)phosphanium.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
methyl carbonate, methyl(trioctyl)phosphanium
CAS number
1204316-79-9
EC number
836-992-4
Molecular formula
C27H57O3P
InChIKey
GWJRHJWCBDKCLK-UHFFFAOYSA-M
InChI
InChI=1S/C25H54P.C2H4O3/c1-5-8-11-14-17-20-23-26(4,24-21-18-15-12-9-6-2)25-22-19-16-13-10-7-3;1-5-2(3)4/h5-25H2,1-4H3;1H3,(H,3,4)/q+1;/p-1
SMILES (canonical and isomeric)
CCCCCCCC[P+](C)(CCCCCCCC)CCCCCCCC.COC(=O)[O-]

Synonyms

  • Trioctylmethylphosphonium methylcarbonate, 30% in MeOH

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
460.72 g/molcalc.
Exact mass
460.4045 Dacalc.
LogP (octanol/water)
8.69calc.
Topological polar surface area
49.36 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
21calc.
Heavy atoms
31calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.96calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
Lipinski rule of five
Passes (1 violation)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
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H270May cause or intensify fire, oxidiser.
  • H301 + H311 + H331Toxic if swallowed. Toxic in contact with skin. Toxic if inhaled.
  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H314Causes severe skin burns and eye damage.
  • H318Causes serious eye damage.
  • H331Toxic if inhaled.
  • H370Causes damage to organs.
Precautionary statements (37)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P220Keep away from clothing and other combustible materials.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P244Keep valves and fittings free from oil and grease.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • 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.
  • P308 + P316If exposed or concerned: Get emergency medical help immediately.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P370 + P376In case of fire: Stop leak if safe to do so.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403Store in a well-ventilated place.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • 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

Tomp-MC suppliers

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Tomp-MC 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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Tomp-MC is traded under.

HS 2931.49Indicative HS code

Non-halogenated organo-phosphorous derivatives, other

World exports in 2024
$3.44B
−6.5% vs 2023, imports $3.07B
2022 to 2024
Top exporters
  1. China54.9%
  2. United States25.4%
  3. Germany5.1%
Top importers
  1. United States20.9%
  2. Argentina14.9%
  3. Brazil14.3%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Tomp-MC, based on the data on this page

What is Tomp-MC?

Tomp-MC is a chemical substance with the molecular formula C27H57O3P and a molar mass of 460.72 g/mol. Its CAS registry number is 1204316-79-9. The IUPAC name is methyl carbonate, methyl(trioctyl)phosphanium.

What is the CAS number of Tomp-MC?

The CAS registry number of Tomp-MC is 1204316-79-9.

What is the molecular formula and weight of Tomp-MC?

The molecular formula of Tomp-MC is C27H57O3P and its molar mass is 460.72 g/mol.

Is Tomp-MC hazardous?

Tomp-MC carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, may cause or intensify fire, oxidiser, toxic if swallowed. toxic in contact with skin. toxic if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Tomp-MC?

Tomp-MC is usually classified under HS code 293149 (Non-halogenated organo-phosphorous derivatives, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Tomp-MC?

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What is the price of Tomp-MC?

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Guides for buyers

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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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