Methyl isothiocyanate
Methyl isothiocyanate (CAS 556-61-6), molecular formula CH3NCS, is a high-purity chemical supplied by Tech Serve Solutions for organic building blocks applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.

| Molecular weight | 73.12 |
|---|---|
| Linear formula | CH3NCS |
| Assay | 97% |
| Boiling point | 117-118 °C(lit.) |
| Density | 1.069 g/cm3 at 25 °C(lit.) |
| Solubility | H2O: slightly soluble |
| Vapour pressure | 21 mmHg (20 °C) |
| Melting point | 30-34 °C(lit.) |
| Application | Methyl isothiocyanate was used to study the effect of pesticide Metam (methyl isothiocyanate is its active ingredient) in the streamside microbial communities of the upper Sacramento river1. |



Hazard statements
- H301Toxic if swallowed
- H310Fatal in contact with skin
- H314Causes severe skin burns and eye damage
- H317May cause an allergic skin reaction
- H330Fatal if inhaled
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P284Wear respiratory protection
- P301IF SWALLOWED
- P302IF ON SKIN
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Flash point | 30 °C / 86 °F |
| Transport (UN / ADR) | UN 2477 3(6.1) / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 23/25-34-43-50/53 |
| Safety statements (S) | 36/37-38-45-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Methyl isothiocyanate?
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Methyl isothiocyanate (CAS 556-61-6), molecular formula CH3NCS, is a high-purity chemical supplied by Tech Serve Solutions for organic building blocks applications, to USP, BP and EP standards.
What grades of Methyl isothiocyanate does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl isothiocyanate in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of Methyl isothiocyanate?
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Methyl isothiocyanate has CAS number 556-61-6 and molecular formula CH3NCS. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Methyl isothiocyanate?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of Methyl isothiocyanate ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should Methyl isothiocyanate be stored?
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Store Methyl isothiocyanate in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is Methyl isothiocyanate used for?
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Methyl isothiocyanate is used in organic building blocks applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for Methyl isothiocyanate?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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