Substance profile
Dazomet
Dazomet is colorless crystals with a weakly pungent odor.
01 · Identification
What Dazomet is
Dazomet is colorless crystals with a weakly pungent odor. Its molecular formula is C5H10N2S2 and its molecular weight is 162.3 g/mol. It melts at 106 °C.
Under the GHS it carries the signal word Warning.
02 · Identifiers
Dazomet identifiers and molecular data
Dazomet CAS number and EC number
Dazomet molecular formula and molecular weight
Other names for Dazomet
- dazomet (ISO)
- tetrahydro-3,5-dimethyl-1,3,5-thiadiazine-2-thione
03 · GHS classification
Dazomet hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Dazomet pictograms and signal word
Dazomet hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 2A | H319 | GHS07 |
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 1 | H410 | GHS09 |
Dazomet hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H302 | Harmful if swallowed. |
| H319 | Causes serious eye irritation. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Dazomet. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Dazomet
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Dazomet issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Dazomet precautionary statements
CLP Annex VI assigns 13 precautionary statements to Dazomet. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Disposal
What has to happen to the contents and the empty container.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Dazomet name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | дазомет (ISO) 3,5-диметилтетрахидро-1,3,5-тиадиазин-2-тион |
| Spanish español | Dazomet (ISO) tetrahidro-3,5-dimetil-1,3,5-tiadiazina-2-tiona |
| Czech čeština | dazomet (ISO) 3,5-dimethyltetrahydro-1,3,5-thiadiazin-2-thion |
| Danish dansk | dazomet (ISO) tetrahydro-3,5-dimethyl-1,3,5- thiadiazine-2-thion |
| German Deutsch | Dazomet (ISO) Tetrahydro-3,5-dimethyl-1,3,5- thiadiazin-2-thion |
| Estonian eesti | dasomet (ISO) tetrahüdro-3,5-dimetüül-1,3,5-tiadiasiin-2-tioon |
| Greek ελληνικά | dazomet (νταζομέτ) (ISO) τετραϋδρο-3,5-διμεθυλο-1,3,5-θειαδιαζινο-2-θειόνη |
| English English | dazomet (ISO) tetrahydro-3,5-dimethyl-1,3,5- thiadiazine-2-thione |
| French français | dazomet (ISO) tétrahydro-3,5-diméthyl-1,3,5- thiadiazine-2-thione |
| Croatian hrvatski | dazomet (ISO) tetrahidro-3,5-dimetil-1,3,5-tiadiazin-2-tion |
| Italian italiano | dazomet (ISO) tetra-idro-3,5-dimetil-1,3,5-tiadiazinan-2-tione |
| Latvian latviešu | dazomets (ISO) tetrahidro-3,5-dimetil-1,3,5-tiadiazīn-2-tions |
| Lithuanian lietuvių | dazometas (ISO) tetrahidro-3,5-dimetil-1,3,5-tiadiazin-2-tionas |
| Hungarian magyar | dazomet (ISO) tetrahidro-3,5-dimetil-1,3,5-tiadiazin-2-tion |
| Maltese Malti | dażomet (ISO) tetraidro-3,5-dimetil-1,3,5- tijadiażin-2-tijon |
| Dutch Nederlands | dazomet (ISO) tetrahydro-3,5-dimethyl-1,3,5- thiadiazine-2-thion |
| Polish polski | dazomet (ISO) 3,5-dimetyloperhydro-1,3,5-tiadiazyno-2-tion |
| Portuguese português | dazomete (ISO) tetra-hidro-3,5-dimetil-1,3,5-tiadiazina-2-tiona |
| Romanian română | dazomet (ISO) tetrahidro-3,5-dimetil-1,3,5-tiadiazin-2-tionă |
| Slovak slovenčina | dazomet (ISO) 3,5-dimetyltetrahydro-1,3,5-tiadiazín-2-tión |
| Slovenian slovenščina | dazomet (ISO) tetrahidro-3,5-dimetil-1,3,5-tiadiazin-2-tion |
| Finnish suomi | datsometti (ISO) tetrahydro-3,5-dimetyyli-1,3,5-tiadiatsiini-2-tioni |
| Swedish svenska | dazomet (ISO) tetrahydro-3,5-dimetyl-1,3,5-tiadiazin-2-tion |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Dazomet GHS label elements
Everything CLP Annex VI fixes for Dazomet, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Dazomet
- Harmful if swallowed.
- Causes serious eye irritation.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Wash … thoroughly after handling.
- Do not eat, drink or smoke when using this product.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF IN EYES:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Get medical advice/attention.
- Rinse mouth.
- If eye irritation persists:
- Remove contact lenses, if present and easy to do. Continue rinsing.
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Dazomet in the GHS label constructor →
07 · Health hazards
Dazomet health hazards and exposure limits
Dazomet hazard summary
A rare sensitizer, but allergic contact dermatitis reported in a pulp and paper mill worker; [Kanerva, p. 1776] Its activity as a biocide is related to decomposition products: methylisocyanate, formaldehyde, hydrogen sulfide, and monomethylamine. [HSDB] An eye irritant; May cause skin sensitization; [ICSC]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Dazomet carcinogenicity classification
Cancer Classification: Group D Not Classifiable as a Human Carcinogen
Source: Hazardous Substances Data Bank (HSDB)
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
08 · Physical and chemical properties
Dazomet properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
Dazomet melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 106 °C (222.8 °F) | HSDB | |
| 120 °C (248 °F) | decomposes | CAMEO |
Dazomet density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.3 g/cm³ | ICSC | |
| 1.3 g/cm³ | at 20 °C | HSDB |
Dazomet solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Reacts with water; soluble in ethanol. | HSDB | |
| SOL IN WATER (0.12% AT 25 °C); INSOL IN CARBON TETRACHLORIDE | at 25 °C | HSDB |
Dazomet vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0000028 mmHg | at 20 °C | HSDB |
| 2.77 mmHg | at 20 °C | CAMEO | |
| 0.0000028 mmHg | Haz-Map |
Dazomet flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 93 °C (199.4 °F) | HSDB |
Dazomet corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Non-corrosive in the dry state | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Source notes
Further notes on Dazomet
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Solubility
Organic solvents 0.0 g/100 ml, isopropanol 0.5 g/100 ml, xylene 1.1 g/100 ml, ethanol 3.0 g/100 ml, ethylene glycol 3.0 g/100 ml, ethylene glycol monomethyl ether 5.0 g/100 ml, dioxane 8.0 g/100 ml, acetone 13.1 g/100 ml, trichloroethylene 30.0 g/100 ml, chloroform 30 g/100 ml, dimethyl sulfoxide, 30 g/100 ml, dimethyl formamide 30 g/100 ml.
Source: HSDB
10 · Handling and storage
Dazomet storage and handling
Dazomet safe storage
Provision to contain effluent from fire extinguishing. Separated from acids and food and feedstuffs. Cool. Dry. Keep in a well-ventilated room.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Dazomet storage conditions
Store in cool, dry place out of children's reach.
Source: Hazardous Substances Data Bank (HSDB)
Dazomet reactivity
DAZOMET decomposes in water, dilute acids and alcohol. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Dazomet in the storage compatibility matrix →
11 · Questions
Dazomet — frequently asked questions
What is the CAS number of Dazomet?
The CAS number of Dazomet is 533-74-4. Its EC number is 208-576-7.
What is the chemical formula of Dazomet?
The molecular formula of Dazomet is C5H10N2S2 and its molecular weight is 162.3 g/mol.
What does a Dazomet label have to show?
Under CLP Annex VI the label for Dazomet carries the pictograms Exclamation mark and Environment and the signal word is Warning.
Is Dazomet flammable?
CLP Annex VI assigns Dazomet no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it. The flash point reported for it is 93 °C (199.4 °F) (HSDB).
Is Dazomet a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Dazomet. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the melting point of Dazomet?
The melting point reported for Dazomet is 106 °C (222.8 °F) (HSDB).
How should Dazomet be stored?
Store in cool, dry place out of children's reach. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Dazomet
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