How to choose an Ethyl Silicate-40 supplier (foundry and refractory sourcing guide)

When choosing an Ethyl Silicate-40 (ETS-40 / TEOS) supplier, compare five criteria: lot-to-lot specification consistency with a certificate of analysis (CoA) per lot, KKDIK registration with a Turkish Safety Data Sheet (SDS), local stock versus an 8-12 week import lead time, sample verification before the purchase order, and TRY payment terms. KORKİMYA meets all five ex-stock.

What is Ethyl Silicate-40 and where is it used?

Ethyl Silicate-40 (ETS-40, tetraethyl orthosilicate / TEOS) is a silicate binder raw material containing 40-42% silicon dioxide (SiO2) by mass. It is mainly used to prepare the binder solution for ceramic shell moulds in investment casting and refractory applications. Supplier selection is critical for the casting line because even small deviations in the binder specification (SiO2 content, hydrolysis behaviour, impurity profile) directly affect mould strength and casting quality.

• Investment casting: preparing the binder solution for ceramic shell moulds.
• Refractory applications: binder for heat-resistant mortars and moulds.
• Raw material in heat-resistant coating and binder production.
• Ceramic mould manufacture and general binder production.

What is the difference between import and local stock?

The most decisive choice in Ethyl Silicate-40 sourcing is between the direct import channel and supply from local stock. Direct import from China typically means an 8-12+ week lead time, foreign-exchange risk, prepayment, a customs and KKDIK documentation burden and no local point of contact when there is a quality issue. Supply from local stock lets the supplier carry those risks and secures the feed to your casting line. The comparison below summarizes the key distinctions between the two channels:

Supplier evaluation criteria

When evaluating an Ethyl Silicate-40 supplier, weigh the technical and commercial criteria together. On the technical side, specification consistency and documentation are decisive; on the commercial side, lead time and payment terms:

• Specification consistency: SiO2 content (40-42%), tetraethoxysilane (TEOS) content (10-15%), density (1.05-1.07 g/cm3 at 20 °C) and impurity limits held from lot to lot.
• Certificate of analysis (CoA) per lot: so your laboratory can verify the expected specification on every shipment.
• KKDIK registration and a Turkish Safety Data Sheet (SDS): regulatory compliance and audit-ready documentation.
• Local stock and lead time: fast dispatch from stock versus an 8-12 week import.
• Sample and small lots: the ability to verify before the purchase order.
• Commercial terms: TRY invoicing and payment terms to reduce FX risk and tied-up capital.

Verification with sample and CoA

The safest way to verify a new or second Ethyl Silicate-40 source before the purchase order (PO) is to proceed via a sample and certificate of analysis (CoA). This removes any surprise on your casting line in terms of mould strength and casting quality:

1. Request a sample from the form on the product page; state your application (investment casting or refractory), target volume and destination.
2. On the certificate of analysis (CoA) that accompanies the sample, compare SiO2 content, TEOS content, density and impurity values with your specification.
3. Verify the sample in your own laboratory for binder-solution hydrolysis behaviour and mould performance.
4. After verification, request a quote with packaging, quantity and TRY payment terms, and plan the order ex-stock.

Ethyl Silicate-40 supply with KORKİMYA

KORKİMYA delivers Ethyl Silicate-40 from local stock, with fast dispatch rather than depending on imports. The product is KKDIK-registered; a current Turkish Safety Data Sheet (SDS) accompanies every shipment, and a certificate of analysis (CoA) and technical data sheet (TDS) are provided on request. Invoicing is in Turkish lira (TRY), and an offer is prepared based on your casting or refractory volume.

• Packaging: steel drums, containers and rail tank cars.
• Storage: in airtight steel tanks; in drums in enclosed areas not exceeding 30 °C. Shelf life is 12 months from the date of manufacture.
• KKDIK-registered product, Turkish SDS and CoA plus TDS on request.
• Shipped under UN 1292 in accordance with dangerous-goods regulations.
• Free sample and TRY price quote: complete the inquiry form in a few minutes.