Pharmaceutical Methylation
Introduces O-, N- and S-methyl groups in actives and intermediates.
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Chelora Chemicals UAE supplies Dimethyl Sulfate (CAS 77-78-1) to verified pharmaceutical, agrochemical, dye and quaternary-ammonium manufacturers and specialty chemical producers across Dubai, Abu Dhabi, Sharjah and all seven Emirates, with batch-wise COA, sealed packing and fast GCC delivery.
Dimethyl Sulfate (DMS) is a powerful industrial methylating agent, supplied as a colourless oily liquid with a faint onion-like odour. It is widely used because it is an efficient, economical way to add methyl groups, and for the same reason it is highly toxic and tightly regulated.
Typical uses are for methylation of phenols, amines and thiols in pharmaceutical and agrochemical synthesis, for quaternary ammonium compounds used as surfactants and softeners, for dye, fragrance and specialty chemical intermediates, and in fine chemical manufacture.
As an established chemical supplier in the UAE, Chelora Chemicals sources Dimethyl Sulfate from approved manufacturers with consistent purity and controlled colour, and delivers it to customers in Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah, Fujairah and Umm Al Quwain, as well as export customers in Saudi Arabia, Oman, Qatar, Kuwait, Bahrain, Africa and South Asia.
Typical specification and physical data for Dimethyl Sulfate supplied in the UAE. Batch-specific values are always confirmed on the Certificate of Analysis issued with each lot.
| Parameter | Specification |
|---|---|
| Appearance | Colourless oily liquid with a faint onion-like odour |
| Purity (GC) | ≥ 99.0% (higher grades on request) |
| Identification | Conforms to structure |
| Moisture | As per COA / customer requirement |
| Impurities & isomers | As per COA |
| Grade | Technical / industrial grade |
| Packing | Steel / lined drums, ISO tank |
| Documents | COA, SDS, TDS, COO |
| Property | Value |
|---|---|
| Chemical name | Dimethyl sulfate |
| CAS number | 77-78-1 |
| Molecular formula | C₂H₆O₄S |
| Molecular weight | 126.13 g/mol |
| Physical state (20 °C) | Liquid |
| Melting point | approx. −32 °C |
| Boiling point | approx. 188 °C (decomposes) |
| Sensitivity | Moisture-sensitive; hydrolyses slowly in water; keep dry and away from ammonia, amines, strong bases, oxidisers and heat |
Values are typical literature data for reference only and do not form a sales specification. Contact us for the latest TDS and batch COA.
Need a specific purity, impurity limit or moisture value? We match your spec to approved makers.
Share Your Specification →From dye houses and agrochemical plants to pharmaceutical and fine-chemical producers, Dimethyl Sulfate is a versatile building block for UAE and GCC manufacturers.
Introduces O-, N- and S-methyl groups in actives and intermediates.
A methylating step in selected crop protection intermediates.
Quaternises tertiary amines for surfactants and conditioners.
Used in methylation steps for colourant and aroma chemicals.
Campaign use by contract manufacturers running multi-step chemistry.
Smaller lots for laboratories and process development.
Our UAE customers for Dimethyl Sulfate range from free zone manufacturers to regional traders re-exporting through Jebel Ali.
Producers of methylated intermediates and actives.
Intermediate and technical producers.
Producers of quaternary ammonium compounds.
Methylation steps in colourant and fine-chemical chains.
Dubai and Sharjah traders re-exporting Dimethyl Sulfate to the GCC, Africa and South Asia.
Contract synthesis plants running campaign-based production for global brands.
Verified QC and R&D laboratories needing small, DG-compliant quantities with full documentation.
Importers in Saudi Arabia, Oman, Qatar, Kuwait, Bahrain, Africa and CIS buying via UAE.
We supply Dimethyl Sulfate to industrial areas, ports and free zones throughout the UAE, with re-export to the wider GCC and beyond.
Fast local delivery and re-export via Jebel Ali Port for traders and manufacturers.
Supply to chemical and industrial units in Musaffah, KEZAD and Khalifa Port.
Serving dye, agro and chemical blending units in Sharjah's industrial areas and free zones.
Reliable deliveries for Ajman manufacturers from our UAE stock and import programme.
Supplying pharma, chemical and industrial producers in RAK's free zones and ports.
Road delivery to the east coast with access to Port of Fujairah for regional shipments.
Consolidated with our northern Emirates deliveries for factories and traders.
Export from the UAE on EXW, FOB, CFR, CIF, DAP or DDP terms.
Because Dimethyl Sulfate is a highly toxic, moisture-sensitive liquid that must be kept dry and sealed, we ship it in packaging suited to UAE summer temperatures and long sea and road transit.
Whether you need a few drums for a pilot campaign or regular bulk loads for continuous production, we plan packing, labelling, dangerous-goods paperwork and transport from port or warehouse to your gate.
Dry, sealed drums for smaller lots.
Bulk ISO tanks for sea and road shipments.
End-use declarations and DG permits arranged with the order.
EXW UAE, FOB Jebel Ali / Khalifa, CFR, CIF, DAP, DDP.
A simple, transparent procurement process built for busy purchase teams.
Send product name, CAS 77-78-1, purity, quantity, packing and delivery Emirate.
We match approved makers and send a quotation with packing, Incoterm and lead time.
COA, SDS and TDS shared upfront, with samples available for qualification.
We lock in the batch, arrange sealed packing and GHS labelling.
Customs clearance, DG handling and transport from port or warehouse.
Delivery to your site in the UAE or GCC, plus repeat-order planning.
Every lot of Dimethyl Sulfate we supply is traceable to its manufacturer and production date. We check the specification against your requirement before dispatch so your synthesis, formulation or dye batch is not put at risk by off-spec material.
Highly toxic and corrosive alkylating agent. Dimethyl Sulfate can be fatal if inhaled, is toxic if swallowed, causes severe skin burns and eye damage, may cause an allergic skin reaction, is suspected of causing genetic defects and may cause cancer (EU CLP Carc. 1B). Symptoms of exposure can be delayed. It must be handled only in closed systems by trained personnel with full protective equipment. Always refer to the supplied SDS for the full GHS classification.
Long-term relationships with established makers keep purity, colour and impurity profile consistent batch after batch.
Clear quotes with grade, packing, Incoterm and lead time so your purchase team can decide quickly.
We understand the specifications that dye, detergent and pharma producers actually need from Dimethyl Sulfate.
COA, SDS, TDS, COO and DG paperwork ready for audits, customs and GCC export.
Delivery across the seven Emirates and export to Saudi Arabia, Oman, Qatar, Kuwait and Bahrain.
From sample and trial lots to annual supply contracts and bulk programmes.
Common questions from UAE and GCC buyers about Dimethyl Sulfate supply, specifications and delivery.
Dimethyl Sulfate is used for methylation of phenols, amines and thiols in pharmaceutical and agrochemical synthesis, for quaternary ammonium compounds used as surfactants and softeners, for dye, fragrance and specialty chemical intermediates, and in fine chemical manufacture.
The CAS number of Dimethyl Sulfate is 77-78-1. Its molecular formula is C₂H₆O₄S and its molecular weight is 126.13 g/mol.
Dimethyl Sulfate (CAS 77-78-1) is also sold as Dimethyl sulfate, Dimethyl sulphate, Sulfuric acid dimethyl ester, DMS. Please mention the CAS number in your enquiry so we quote the right material.
Chelora Chemicals UAE is a B2B chemical supplier and distributor of Dimethyl Sulfate, serving Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah, Fujairah and Umm Al Quwain, with full COA, SDS and TDS documentation and export to the wider GCC.
Yes. We deliver to all seven Emirates, including Jebel Ali and JAFZA in Dubai, KEZAD, Musaffah and Khalifa Port in Abu Dhabi, and SAIF Zone and Hamriyah Free Zone in Sharjah, as well as RAKEZ, Ajman Free Zone and Fujairah.
Our standard grade is ≥ 99.0% by GC as per the COA. Specific limits on moisture, isomers, colour or other impurities can be sourced on request to suit your process.
Dimethyl Sulfate (CAS 77-78-1) is different from Diethyl Sulfate (CAS 64-67-5), which is an ethylating agent, and from methyl chloride and other methylating reagents. It is a controlled hazardous chemical in many markets, so supply is to verified industrial customers and may require permits and an end-use declaration. Please quote the CAS number in your enquiry.
Share the grade, quantity, packing, Incoterm and delivery Emirate through our contact page and our team aims to respond within one business day.
It is typically supplied in dry, sealed steel or compatible-lined drums, with ISO tanks for bulk. Packaging is sealed and labelled for safe dangerous-goods transport, and supply is subject to the permits and end-use declarations required for the destination.
The minimum order depends on packing and availability. We handle everything from a few drums or small packs for trials and lab qualification up to full container loads and ISO tanks.
Store in tightly closed, dry steel or compatible-lined containers in a cool, well-ventilated and secured area, away from water, ammonia, amines, strong bases and oxidisers. Use closed transfer systems only and handle in line with the SDS and your site's hazardous-chemical controls.
Yes, it is highly hazardous. Dimethyl Sulfate can be fatal if inhaled, is toxic if swallowed, causes severe skin burns and eye damage, may cause an allergic skin reaction, is suspected of causing genetic defects and may cause cancer (EU CLP Carc. 1B). Symptoms of exposure can be delayed. It must only be handled in closed systems by trained, authorised personnel with full protective equipment and the SDS supplied with the product.
Yes. We export from the UAE to Saudi Arabia, Oman, Qatar, Kuwait, Bahrain, East and West Africa, South Asia and other markets on EXW, FOB, CFR, CIF, DAP or DDP terms, subject to the import rules of each destination.
Samples of dimethyl sulfate are restricted by dangerous-goods and permit rules. We share the COA, SDS and TDS first and supply samples only to verified industrial buyers who hold the required permits.
Tell us your purity, quantity, packing and delivery Emirate, and get a quote for Dimethyl Sulfate from a trusted chemical supplier in the UAE.