Molekula
3-[Hydroxy(polyethyleneoxy)propyl]heptamethyltrisiloxane
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
3-[Hydroxy(polyethyleneoxy)propyl]heptamethyltrisiloxane is a silicone-based surfactant widely used in cosmetics, personal care formulations, and detergents for its emulsifying, wetting, and foaming properties. It improves texture, stability, and skin feel in lotions, shampoos, and cleansers while reducing surface tension. This chemical has a CAS number of 67674-67-3, a molecular formula of (C2H4O)nC10H28O3Si3, and an approximate molecular weight of 324.64. It should be stored at ambient conditions and handled with caution, as it carries a **Danger** signal word. Molekula supplies 3-[Hydroxy(polyethyleneoxy)propyl]heptamethyltrisiloxane from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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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 | Clear, colourless liquid |
| Viscosity | 30-50cst |
| FT-IR | Conforms to Reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 118 °C |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90037068 |
| CAS Number | 67674-67-3 |
| Molecular Formula | (C2H4O)nC10H28O3Si3 |
| Molecular Weight | 324.64 |
| SMILES | OCCOCCC[Si](O[Si](C)(C)C)(O[Si](C)(C)C)C |
| UN Number | UN3082 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 39100000 |
| Tariff Code | 3910000090 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
-
Hazardous to the Environment
GHS09
Hazard statements
- H318 Causes serious eye damage
- H332 Harmful if inhaled
- H411 Toxic to aquatic life with long lasting effects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P304+341 IF INHALED: If breathing is difficult, 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
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is 3-[Hydroxy(polyethyleneoxy)propyl]heptamethyltrisiloxane primarily used for?
This compound is commonly used as a surfactant, defoamer, or leveling agent in coatings, inks, and silicone-based formulations to improve surface properties.
What is the chemical formula and molecular weight of this product?
The formula is **(C₂H₄O)ₙC₁₀H₂₈O₃Si₃**, with a molecular weight of **324.64 g/mol** (varies slightly based on polyethylene oxide chain length, *n*).
How should this product be stored?
Store at **ambient temperature** in a tightly sealed container, away from moisture and direct sunlight to prevent degradation.
What purity grades or specifications does Molekula offer for this product?
We supply this product in **technical grade (95%+ purity)**; custom specifications may be available upon request.
Can Molekula provide bulk quantities of this chemical?
Yes, we offer bulk packaging (drums, IBCs) for this product—minimum order quantities and pricing depend on the specific application and volume required.
What documentation is provided with each order of this chemical?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a technical datasheet detailing key properties and handling instructions.
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.