Substance profile
Methylene bis(thiocyanate)
Methylene bis(thiocyanate) is a yellow to light orange-colored solid.
01 · Identification
What Methylene bis(thiocyanate) is
Methylene bis(thiocyanate) is a yellow to light orange-colored solid. Its molecular formula is C3H2N2S2 and its molecular weight is 130.2 g/mol. It melts at 106 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Methylene bis(thiocyanate) identifiers and molecular data
Methylene bis(thiocyanate) CAS number and EC number
Methylene bis(thiocyanate) molecular formula and molecular weight
Other names for Methylene bis(thiocyanate)
- methylene dithiocyanate
03 · GHS classification
Methylene bis(thiocyanate) hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Methylene bis(thiocyanate) pictograms and signal word
Methylene bis(thiocyanate) hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 3 | H301 | GHS06 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 1 or 2 | H330 | GHS06 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 1A or 1B or 1C | H314 | GHS05 |
| Skin sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H317 | GHS07 |
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Methylene bis(thiocyanate) hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H330 | Fatal if inhaled. |
| H301 | Toxic if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
This page lists only the codes assigned to Methylene bis(thiocyanate). 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 Methylene bis(thiocyanate)
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 Methylene bis(thiocyan… 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
Methylene bis(thiocyanate) precautionary statements
CLP Annex VI assigns 16 precautionary statements to Methylene bis(thiocyanate). 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
Methylene bis(thiocyanate) 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 | метиленов дитиоцианат |
| Spanish español | Ditiocianato de metileno |
| Czech čeština | methylen-dithiokyanát |
| Danish dansk | methylendithiocyanat |
| German Deutsch | Methylendithiocyanat Diisocyanatomethan |
| Estonian eesti | metüleenditiotsüanaat |
| Greek ελληνικά | διθειοκυανικό μεθυλένιο |
| English English | methylene dithiocyanate |
| French français | dithiocyanate de méthylène |
| Croatian hrvatski | metilen ditiocijanat |
| Italian italiano | ditiocianato di metilene metilene ditiocianto |
| Latvian latviešu | metilēna ditiocianāts |
| Lithuanian lietuvių | metileno ditiocianatas |
| Hungarian magyar | metilén-ditiocianát |
| Maltese Malti | ditijoċjanat tal-metilen |
| Dutch Nederlands | methyleendithiocyanaat |
| Polish polski | ditiocyjanian metylenu |
| Portuguese português | ditiocianato de metileno |
| Romanian română | ditiocianat de metilen |
| Slovak slovenčina | metylénditiokyanát |
| Slovenian slovenščina | metilen ditiocianat |
| Finnish suomi | metyleeniditiosyanaatti |
| Swedish svenska | metylenditiocyanat |
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
Methylene bis(thiocyanate) GHS label elements
Everything CLP Annex VI fixes for Methylene bis(thiocyanate), laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Methylene bis(thiocyanate)
- Fatal if inhaled.
- Toxic if swallowed.
- Causes severe skin burns and eye damage.
- May cause an allergic skin reaction.
- Very toxic to aquatic life.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Avoid breathing dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Use only outdoors or in a well-ventilated area.
- Contaminated work clothing should not be allowed out of the workplace.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF INHALED:
- Immediately call a POISON CENTER/doctor/…
- Get medical advice/attention.
- Rinse mouth.
- Do NOT induce vomiting.
- If skin irritation or rash occurs:
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Methylene bis(thiocyanate) in the GHS label constructor →
07 · Health hazards
Methylene bis(thiocyanate) health hazards and exposure limits
Methylene bis(thiocyanate) hazard summary
A skin and eye irritant; May cause skin sensitization; [ICSC] Toxic by inhalation and ingestion; Causes burns; [ESIS] A corrosive substance that causes lacrimation and may cause lung edema after inhalation of high concentrations; [CAMEO] Thiocyanates release cyanide on contact with acid. [MSDSonline] See CYANIDES.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Methylene bis(thiocyanate) carcinogenicity classification
Cancer Classification: Group B2 Probable Human Carcinogen (Based on Metam Sodiam Data)
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
Methylene bis(thiocyanate) 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.
Methylene bis(thiocyanate) melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 106 °C (222.8 °F) | range, midpoint shown | HSDB |
| 106.11 °C (223 °F) | range, midpoint shown | CAMEO |
Methylene bis(thiocyanate) solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Solubility in water: none | ICSC | |
| Greater than 100 mg/ml in DMSO at 20 °C. 10-50 mg/ml in 95% ethanol at 20 °C. Greater than 100 mg/ml in acetone at 20 °C. | at 20 °C | HSDB | |
| Decomposes (NTP, 1992) | decomposes | CAMEO |
Methylene bis(thiocyanate) vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.002 mmHg | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
Methylene bis(thiocyanate) storage and handling
Methylene bis(thiocyanate) safe storage
Separated from food and feedstuffs. Well closed.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Methylene bis(thiocyanate) reactivity
METHYLENEBIS(THIOCYANATE) reacts vigorously with strong bases and strong oxidizing agents such as hydrogen peroxide. Hydrolyzes slowly with water at boiling temperatures and reacts slowly and exothermically with aqueous acids (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Methylene bis(thiocyanate… in the storage compatibility matrix →
10 · Questions
Methylene bis(thiocyanate) — frequently asked questions
What is the CAS number of Methylene bis(thiocyanate)?
The CAS number of Methylene bis(thiocyanate) is 6317-18-6. Its EC number is 228-652-3.
What is the chemical formula of Methylene bis(thiocyanate)?
The molecular formula of Methylene bis(thiocyanate) is C3H2N2S2 and its molecular weight is 130.2 g/mol.
What does a Methylene bis(thiocyanate) label have to show?
Under CLP Annex VI the label for Methylene bis(thiocyanate) carries the pictograms Skull and crossbones, Corrosion and Environment and the signal word is Danger.
Is Methylene bis(thiocyanate) flammable?
CLP Annex VI assigns Methylene bis(thiocyanate) 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.
Is Methylene bis(thiocyanate) a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Methylene bis(thiocyanate). 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 Methylene bis(thiocyanate)?
The melting point reported for Methylene bis(thiocyanate) is 106 °C (222.8 °F), range, midpoint shown (HSDB).
Nearby
Substances next to Methylene bis(thiocyanate)
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