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Reaction Chemistry

Six reaction families

Expertise in handling chlorine and sulphur is what lets us run these reactions at commercial scale. Most of our catalogue is a direct consequence of the first three.

Our chemistry

What we run

Each reaction family below is in routine commercial production, not development.

The foundation of the business. We indigenously developed processes for chlorinated inorganics — thionyl chloride (SOCl2), sulphur dichloride (SCl2) and sulphur monochloride (S2Cl2).

Producing our own thionyl chloride is what makes everything downstream commercially viable and gives customers supply security that a purchased-reagent producer cannot match.

Conversion of carboxylic acids to the corresponding acid chlorides. This is the single largest part of our catalogue, covering short-chain aliphatics (butyryl, isobutyryl, valeroyl, pivaloyl), fatty chains (octanoyl, decanoyl, lauroyl, cocoyl), branched chains (2-ethylhexanoyl, isononanoyl, neodecanoyl) and aromatics (nitrobenzoyl, toluoyl, trimethylbenzoyl, terephthaloyl, isophthaloyl).

Conversion of alcohols to alkyl chlorides and chlorinated ethers — n-octyl chloride, 2-methoxyethyl chloride, 2-propoxyethyl chloride, diethylene glycol dichloride and triethylene glycol dichloride.

These feed herbicides such as acetochlor and pretilachlor, and crown-ether chemistry.

Aromatic acylation and alkylation, used to build specialty aromatic intermediates where the acid chloride itself is the acylating agent.

Drawing on the same sulphur-handling competency as our inorganic chlorides, for intermediates requiring sulfonic acid functionality.

Downstream conversion of acid chlorides to amides where customers prefer to buy the amide rather than run the step themselves.

Backward integration

Why making our own SOCl₂ matters

Thionyl chloride is the reagent that converts acids to acid chlorides and alcohols to alkyl chlorides. If you buy it, your cost, quality and continuity are someone else’s decision.

Because we manufacture it, we control all three — which is the practical reason regulated customers treat us as a long-term supply partner.

Chlorine + sulphur

Raw materials handled under our process safety framework.

Thionyl chloride

Manufactured on site — the reagent everything else depends on.

Acid & alkyl chlorides

29 catalogue products plus contract-manufactured molecules.

Customer’s active

APIs, agrochemical actives, polymers, dyes and surfactants.

Work with Transpek

Does your route need one of these?

Send us the transformation you are trying to run. We will tell you whether our chemistry fits.