Ⅰ. Organic Solvent Diluents (Suitable for Industrial/Routine Scenarios)

1. White oil (liquid paraffin)
   • It is the most commonly used and safest diluent. As a saturated alkane, it is completely miscible with dimethyl silicone oil.
   • Advantages: No pungent odor, stable chemical properties and high safety. It can be used in daily chemical products (e.g., conditioners, hand creams), mold release agents, rubber and plastic softening and other scenarios.
   • Note: Select white oil with viscosity matching that of dimethyl silicone oil to avoid stratification after dilution.
2. Aliphatic hydrocarbon solvents
   • Representatives: n-hexane, cyclohexane, petroleum ether, solvent oil (e.g., 200# solvent oil).
   • Advantages: Strong dissolving power and good fluidity of the diluted system, suitable for industrial cleaning, coating additives and other scenarios.
   • Note: Some solvents (e.g., n-hexane) are highly volatile. Operation should be carried out in a well-ventilated environment, and open fire should be avoided.
3. Aromatic hydrocarbon solvents
   • Representatives: Toluene, xylene.
   • Advantages: Better dissolving power than aliphatic hydrocarbons, suitable for dilution under high-temperature working conditions (e.g., high-temperature mold release agents).
   • Note: They are slightly toxic and have pungent odors, which are only allowed for industrial use and prohibited in food and daily chemical fields.
4. Ester solvents
   • Representatives: Ethyl acetate, butyl acetate.
   • Advantages: Weak polarity, certain compatibility with dimethyl silicone oil, suitable for systems that need to balance solubility with some resins (e.g., silicone coatings).
   • Note: Compatibility is slightly inferior to that of hydrocarbon solvents. A small-proportion compatibility test should be conducted first.

Ⅱ. Silicone-based Diluents (Suitable for High-purity/Special Scenarios)

1. Low-viscosity dimethyl silicone oil
   • Use 10cs, 20cs, 50cs low-viscosity dimethyl silicone oil to dilute 100cs and above high-viscosity dimethyl silicone oil.
   • Advantages: Complete miscibility, without changing the original properties of dimethyl silicone oil (e.g., high temperature resistance, aging resistance, lubricity) after dilution. It is suitable for precision instrument lubrication, electronic component heat dissipation, food-grade mold release and other scenarios.
   • Note: The dilution ratio can be flexibly adjusted, and uniform mixing can be achieved by stirring without heating.
2. Special methyl silicone oil diluent
   • Special organosilicon diluents are available in industry, which are mainly composed of low-molecular-weight polysiloxanes with strong pertinence and higher stability of the diluted system.

Ⅲ. Precautions for Dilution

1. Dilution sequence: It is recommended to slowly add the diluent to dimethyl silicone oil while stirring to avoid local unevenness caused by one-time pouring.
2. Scenario matching: For food and daily chemical fields, white oil or low-viscosity dimethyl silicone oil is preferred; for industrial high-temperature scenarios, toluene/xylene can be selected; for precision fields, low-viscosity dimethyl silicone oil is preferred.
3. Avoid polar solvents: Strongly polar solvents such as water, ethanol, methanol and ethylene glycol are completely immiscible with dimethyl silicone oil and should never be used.
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