Buyer guides

Practical guides for chemical and ingredient buyers

Short, practical reading for procurement and technical teams — what to specify, how materials differ, and how export shipments are put together.

5 min read
How to request a chemical quotation: the checklist procurement teams use
The eight details that turn a chemical enquiry into an accurate quotation first time — product identity, grade, quantity, packing, documents, destination.
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6 min read
Phase transfer catalysts: choosing between TEBAC, TBAB and phosphonium salts
How quaternary ammonium and phosphonium phase transfer catalysts work, and how lipophilicity, counter-ion and stability guide the choice for a reaction.
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5 min read
Sodium benzoate, potassium sorbate or calcium propionate? Choosing a food preservative
How the three most common food preservatives differ — the pH range each works in, which foods they suit, and what to specify when buying.
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6 min read
Importing chemicals from India: documents, packing and shipping checklist
Checklist for overseas buyers importing chemicals, essential oils and botanicals from India: documents, dangerous goods, packing, ports and Incoterms.
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