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Herbicides

Dazomet

Also known as Basamid, 3,5-Dimethyl-1,3,5-thiadiazinane-2-thione, Mylone

CAS 533-74-4Formula C5H10N2S2Molar mass 162.28 g/molEC 208-576-7
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 22 suppliers listed
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Dazomet chemical structure, C5H10N2S2, CAS 533-74-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless crystals
Melting point
106 °C
Density
Relative density (water = 1): 1.3
Flash point
93 °C
Solubility
SOL IN WATER (0.12% AT 25 °C), INSOL IN CARBON TETRACHLORIDE
HS code
293499
Category
Herbicides
UN number
UN 3077
Illustrative photo, colourless crystals in small glass vials on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Dazomet?

Plain description, key identifiers and synonyms

Dazomet is a dithiocarbamic ester that is 1,3,5-thiadiazinane with a thione moiety at position 2 and in which the hydrogens attached to the nitrogens are replaced by methyl groups. A fungicide, herbicide and nematicide, it is used prior to sowing or planting for the control of soil fungi, nematodes, bacteria and germinating weeds, and as fumigant for poultry litter and eggs to control Salmonella. It is a non-ozone-depleting alternative to methyl bromide. It has a role as a herbicide, a nematicide, an antibacterial agent and an antifungal agrochemical. It is a dithiocarbamic ester and a thiadiazinane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3,5-dimethyl-1,3,5-thiadiazinane-2-thione
CAS number
533-74-4 CAS number cross-checked
EC number
208-576-7
Molecular formula
C5H10N2S2
UNII
S7419CG4W5
MDL number
MFCD00023809
InChIKey
QAYICIQNSGETAS-UHFFFAOYSA-N
InChI
InChI=1S/C5H10N2S2/c1-6-3-7(2)5(8)9-4-6/h3-4H2,1-2H3
SMILES (canonical and isomeric)
CN1CN(C(=S)SC1)C

Synonyms

  • Basamid
  • 3,5-Dimethyl-1,3,5-thiadiazinane-2-thione
  • Mylone
  • Tiazon
  • DMTT
  • Thiazone
  • Nefusan
  • Thiazon
  • Basamid-Puder
  • Basamid G
  • Basamid P
  • Carbothialdin
  • Dimethylformocarbothialdine
  • Prezervit
  • Crag nemacide
  • Crag 974
  • Crag 85W
  • Mylon
  • Mylone 85
  • Basamid-Granular
  • Fennosan B 100
  • Stauffer N 521
  • Crag fungicide 974
  • Nalcon 243
  • Thiadiazin (pesticide)
Show all 39 synonyms
  • UCC 974
  • Troysan 142
  • Dazomet-Powder BASF
  • 3,5-Dimethyltetrahydro-1,3,5-thiadiazine-2-thione
  • Tetrahydro-3,5-dimethyl-2H-1,3,5-thiadiazine-2-thione
  • 2-Thio-3,5-dimethyltetrahydro-1,3,5-thiadiazine
  • Dazoberg
  • Micofume
  • 2H-1,3,5-Thiadiazine-2-thione, tetrahydro-3,5-dimethyl-
  • 3,5-Dimethyl-2-thionotetrahydro-1,3,5-thiadiazine
  • 3,5-Dimethyltetrahydro-1,3,5-2H-thiadiazine-2-thione
  • 3,5-Dimethyltetrahydro-2H-1,3,5-thiadiazine-2-thione
  • Tetrahydro-2H-3,5-dimethyl-1,3,5-thiadiazine-2-thione
  • 3,5-Dimethyl-1,2,3,5-tetrahydro-1,3,5-thiadiazinethione-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

Appearance
Colorless crystalsexp.
Odour
Weakly pungentexp.
Melting point
106 °Cexp.
Density
Relative density (water = 1): 1.3exp.
Flash point
93 °Cexp.
Solubility
SOL IN WATER (0.12% AT 25 °C), INSOL IN CARBON TETRACHLORIDEexp.
Vapour pressure
2.8 × 10⁻⁶ mm Hg at 20 °Cexp.

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
162.28 g/molcalc.
Exact mass
162.0285 Dacalc.
LogP (octanol/water)
0.8calc.
Topological polar surface area
6.48 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
9calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.8calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, S=C1NCNCS1

S=C1NCNCS1

1 ring, 7 atoms, the Tetrahydrothiadiazine-2-thione ring system.

22 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H319Causes serious eye irritation.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (11)
  • 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.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P330Rinse mouth.
  • P337 + P317If eye irritation persists: Get medical help.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3077
Transport hazard class
6.1
Packing group
III

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

Dazomet suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 22 suppliers
22 of 22 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

22 suppliers in 6 countries

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Dazomet price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Soil sterilant, applied prior to planting out crops. Controls soil fungi..., nematodes, germinating weed seeds, bacteria, and soil insects. Also used as a slimicide in pulp and paper manufacture, and as a preservative in adhesives and glues.

Preservative for proteinaceous additives.

Preplant control of soil fungi, nematodes, bacteria, germinating weeds, soil insects in seedbeds for tobacco, nurseries, greenhouses, substrates for potted plants, turf, ornamentals, vegetables.

Use classes: Insecticides, Fungicides, Herbicides, Pesticides.

Roles

  • agrochemical
  • antibacterial agent
  • antifungal agent
  • antifungal agrochemical
  • antimicrobial agent
  • fungicide
  • herbicide
  • nematicide
  • pesticide

Functional uses

  • Biocide

How it is made

Prepared commercially by reaction of carbon disulfide, methylamine and caustic soda.

Dazomet may be produced by: (A) The interaction of carbon disulfide, methylamine and formaldehyde, or (B) The action of formaldehyde on methylammonium methyldithiocarbamate.

Metam-sodium + formaldehyde + methylamine (carbonyl condensation)

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 613-008-00-X

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 Dazomet is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Dazomet?

Dazomet is a dithiocarbamic ester that is 1,3,5-thiadiazinane with a thione moiety at position 2 and in which the hydrogens attached to the nitrogens are replaced by methyl groups.

What is the CAS number of Dazomet?

The CAS registry number of Dazomet is 533-74-4.

What is the molecular formula and weight of Dazomet?

The molecular formula of Dazomet is C5H10N2S2 and its molar mass is 162.28 g/mol.

What is Dazomet used for?

Soil sterilant, applied prior to planting out crops. Controls soil fungi..., nematodes, germinating weed seeds, bacteria, and soil insects. Also used as a slimicide in pulp and paper manufacture, and as a preservative in adhesives and glues. Preservative for proteinaceous additives.

Is Dazomet hazardous?

Dazomet carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes serious eye irritation, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dazomet?

Dazomet is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dazomet?

CompoundList lists 22 suppliers of Dazomet in United States, China, Brazil, Canada and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Dazomet?

Suppliers quote Dazomet 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 Dazomet

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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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