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Herbicides

Metam

Also known as Methylcarbamodithioic acid, Methyldithiocarbamic acid, Methan

CAS 144-54-7Formula C2H5NS2Molar mass 107.20 g/molEC 205-632-2
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Metam chemical structure, C2H5NS2, CAS 144-54-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
144-54-7
Formula
C2H5NS2
Molar mass
107.20 g/mol
EC number
205-632-2
HS code
293020
Category
Herbicides

What is Metam?

Plain description, key identifiers and synonyms

Metam is a member of the class of dithiocarbamic acids that is dithiocarbamic acid in which a hydrogen attached to the amino group has been replaced by a methyl group. It is used (most widely as the corresponding sodium salt, metam-sodium) as an agricultural pesticide, mainly as a broad spectrum soil fumigant for the control of weeds, nematodes, soil-borne insects and fungi. It has a role as a proinsecticide, a profungicide, a proherbicide and a pronematicide. It is an organosulfur insecticide and a member of dithiocarbamic acids. It is a conjugate acid of a metam(1-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
methylcarbamodithioic acid
CAS number
144-54-7 CAS number cross-checkedOther or deprecated CAS: 137-41-7
EC number
205-632-2
Molecular formula
C2H5NS2
UNII
OA1I97689K
InChIKey
HYVVJDQGXFXBRZ-UHFFFAOYSA-N
InChI
InChI=1S/C2H5NS2/c1-3-2(4)5/h1H3,(H2,3,4,5)
SMILES (canonical and isomeric)
CNC(=S)S

Synonyms

  • Methylcarbamodithioic acid
  • Methyldithiocarbamic acid
  • Methan
  • n-methyldithiocarbamic acid
  • N-Methylcarbamodithioic acid
  • Methyldithiocarbanic acid
  • Methyldithiocarbanic acid (8CI)
  • Methylcarbamodithioic acid (8CI)
  • methyl-dithiocarbamic acid
  • methyldithiocarbaminic acid
  • Methyl-dithiocarbamidsaeure
  • Dithiokohlensaeure-methylamid
  • Methyldithiocarbamate
  • Monopotassium methylcarbamodithioate
  • Carbamic acid, N-methyldithio-, potassium salt
  • Methylcarbamodithioic acid K salt
  • methanedithioic acid, methylamino-

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
107.20 g/molcalc.
Exact mass
106.9863 Dacalc.
LogP (octanol/water)
0.42calc.
Topological polar surface area
12.03 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
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

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Metam suppliers

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Metam 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

Use classes: Insecticides, Nematicides, Fungicides, Herbicides.

Roles

  • antifungal agent
  • antimicrobial agent
  • fungicide
  • herbicide
  • insecticide
  • nematicide
  • pesticide
  • pro-agent
  • profungicide
  • proherbicide
  • proinsecticide
  • pronematicide
  • propesticide

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 Metam is traded under.

HS 2930.20Indicative HS code

Thiocarbamates and dithiocarbamates

World exports in 2024
$377M
−5.5% vs 2023, imports $372M
2019 to 2024
Top exporters
  1. China49.2%
  2. Germany11.2%
  3. Japan9.7%
Top importers
  1. India * partner reported12.2%
  2. Australia12.1%
  3. United States7.1%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Metam, based on the data on this page

What is Metam?

Metam is a member of the class of dithiocarbamic acids that is dithiocarbamic acid in which a hydrogen attached to the amino group has been replaced by a methyl group.

What is the CAS number of Metam?

The CAS registry number of Metam is 144-54-7. Other or deprecated CAS numbers: 137-41-7.

What is the molecular formula and weight of Metam?

The molecular formula of Metam is C2H5NS2 and its molar mass is 107.20 g/mol.

What is Metam used for?

Use classes: Insecticides, Nematicides, Fungicides, Herbicides.

Is Metam hazardous?

No GHS hazard classification for Metam 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 Metam?

Metam is usually classified under HS code 293020 (Thiocarbamates and dithiocarbamates). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Metam?

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

What is the price of Metam?

Suppliers quote Metam 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 Metam

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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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