WACKER® AK 350 is a linear, non-reactive polydimethylsiloxane with a viscosity of approximately 350 mm²/s. Its chemical structure gives WACKER® AK 350 unique properties that differentiate it from organic materials like mineral oils. It has a low solidifying point and exhibits good solubility in a wide range of solvents.

CAS Number: 9006-65-9

Functions: Anti-Foaming Agent, Lubricant, Lubricant (External), Lubricant (Internal), Polishing Agent, Release Agent, Solvent, Water Repellent

Chemical Family: Siloxanes

Product Type: Hydraulic Fluids

Certifications & Compliance: BSE & TSE, BfR 14 Recommendation, BfR 15 Recommendation, BfR 36 Recommendation, BfR 36/2 Recommendation , BfR Recommendation, Coalition of Northeastern Governors (CONEG), Consumer Product Safety Improvement Act (CPSIA), Directive 2000/53/EC, Directive 2011/65/EC amended through EU/2015/863 (RoHS), EC No. 1935/2004, EC No.1907/2006, EU Packaging Directive (94/62/EC), FDA 21 CFR 175.105, FDA 21 CFR 175.300, FDA 21 CFR 175.380, FDA 21 CFR 175.390, FDA 21 CFR 176.170, FDA 21 CFR 176.180, FDA 21 CFR 176.200, FDA 21 CFR 176.210, FDA 21 CFR 177.1200, FDA 21 CFR 177.1210, FDA 21 CFR 177.2260, FDA 21 CFR 177.2800, FDA 21 CFR 178.3120, FDA 21 CFR 178.3570, FDA 21 CFR 178.3910, FDA 21 CFR 181.28, FDA 40 CFR 180.910, FDA 40 CFR 180.920, FDA 40 CFR 180.960, GB 4806.1-2016, GB 9685-2016, REACH Exempt (Europe), Regulation (EC) No. 1005/2009, Regulation (EU) No. 10/2011 (PIM), Regulation (EU) No. 1169/2011, Regulation (EU) No. 2019/1021, Swiss Ordinance (SR 817.023.21), Waste Electrical & Electronic Equipment Directive (WEEE)

Synonyms: Dimethicone

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Additives Included
Chemical Family
Product Type
Plastics & Elastomers Functions
CAS No.
9006-65-9
EC No.
618-433-4
Chemical Structure

WACKER® AK 350 - Chemical Structure

Features & Benefits

Applications & Uses

Home Care Applications
Application Details
  • Release agent
  • Lubricant
  • Hydraulic fluid
  • Antifoam agent
  • Water-repellent agent
  • Liquid dielectric for electrical and electronic equipment
  • Heat-transfer oil
  • Polish additive
  • plastics additive
  • Additive for textile and fiber auxiliaries

Processing

  • Due to WACKER® AK 350 many diverse applications, no general processing information can be provided.
  • Parameters will vary from application to application.
  • Available in a range of viscosities, WACKER® SILICONE FLUIDS AK are miscible with each other in any ratio.
  • The standard product's viscosity can thus be altered to suit your individual needs.
  • WACKER® AK 350 is a non-polar liquid and is immiscible with polar solvents such as water or short-chain alcohols. In aliphatic and aromatic hydrocarbons, chlorohydrocarbons, ethers, esters, ketones and higher alcohols, WACKER® AK 350 is soluble in any proportion. 

Properties

Physical Form
Soluble in
Esters, Ketones, Ethers, Higher alcohols, Aliphatic and aromatic hydrocarbons, Chloro-hydrocarbons
Immiscible In
Water, Short-chain alcohols
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 25°C)approx. 0.97 g/cm³DIN 51757
Flash Point260°CISO 2719
Ignition Temperature410°CEN 14522
Kinematic Viscosity (at 25°C)approx. 350 mm²/sDIN 53019
Refractive Index (at 25°C)approx. 1.403
Surface Tension (at 25°C)0.021N/m
Properties
  • Minimal change in physical properties over a broad temperature range
  • Excellent water-repellent properties
  • Good dielectric properties
  • Low surface tension and thus high surface activity chemically highly unreactive
  • Low solidifying point
  • Good solubility in a wide range of solvents

Regulatory & Compliance

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania

Storage & Handling

Storage Information

Maximum temperature allowed during storage and transportation: 50 °C.