Molekula
Hydrophobic pyrogenic silica
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Hydrophobic pyrogenic silica is a fumed silica treated to be water-repellent, used as a thickening agent, anti-caking agent, and rheology modifier in coatings, adhesives, and sealants. Available in powder form, it is stable at ambient storage conditions. CAS: 67762-90-7. Signal word: Warning.
Molekula supplies Hydrophobic pyrogenic silica in 100 g packs, from £37.08 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 6 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £30.90 per pack ex VAT · £37.08 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| pH | 4-6 (in 4% dispersion) |
| Loss on Drying | 2 hours at 105.C ≤ 0.5% |
| Carbon (C) | 3.5.5% |
| Tapped Density | ~ 60 |
| Specific Surface Area(BET) | 80 - 120 m2/g |
| Silicon Dioxide (SiO2) | ≥ 99.8% (based on ignited material) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90028614 |
| CAS Number | 67762-90-7 |
| Molecular Formula | N/A |
| Molecular Weight | N/A |
| REACH Code | Y110 |
| HTS Code | 3910.00.00.00 |
| Tariff Code | 3910000090 |
Safety & GHS
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Serious Health Hazard
GHS08
Hazard statements
- H373 May cause damage to organs through prolonged or repeated exposure
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P284 Wear respiratory protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is hydrophobic pyrogenic silica used for?
It is used as a thickening agent, anti-caking agent, and rheology modifier in coatings, adhesives, and sealants.
What is the chemical formula and molecular weight?
The formula and molecular weight are not available for this product.
How should hydrophobic pyrogenic silica be stored?
Store at ambient temperature in a dry, well-ventilated area.
What grade is available?
No specific grade designation is stated for this product. It is supplied to a specification that includes a white powder appearance, pH 4-6 in a 4% dispersion, loss on drying of no more than 0.5% after 2 hours at 105 °C, a BET specific surface area of 80-120 m2/g and silicon dioxide content of at least 99.8% based on ignited material.
Can Molekula supply it in bulk?
Yes, Molekula can supply hydrophobic pyrogenic silica in bulk quantities upon request.
What documentation comes with the order?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS).
Where can I buy Hydrophobic pyrogenic silica?
Directly from Molekula, which lists Hydrophobic pyrogenic silica in 100 g packs from £37.08 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.