Shin-Etsu KMP-590 Polymethylsilsesquioxane Silicone Resin Powder

KMP-590 is a white silicone resin powder supplied by Shin-Etsu Chemical Co., Ltd. Its INCI name is POLYMETHYLSILSESQUIOXANE. It is a 100% active raw material in powder form, ready to use, and is mainly used in skin care and make-up products to provide a silky skin feel and thickening properties.

• Silky skin feeling
• Thickening properties
• Powder form: easy to handle, ready to use
• High purity: 100% active raw material

KMP-590 is positioned for personal-care use. The TDS lists the following application fields:

• Skin care
• Make-up

The product is ready to use and does not require special pre-treatment. The addition stage and specific processing should be confirmed by formulators through preliminary tests.

• Store sealed in a cool, dark place away from heat and flame.
• Avoid contact with heat, light, acid, alkali, etc.; the product may deteriorate under such conditions.
• Please consult the SDS for safety information.

Q1: Is KMP-590 a silicone oil or a silicone powder?

It is a silicone resin powder, not a liquid silicone oil.

Q2: Can it be added directly into a formulation?

The TDS states it is “ready to use”, but suitability for a specific formulation should still be verified by preliminary tests.

Q3: What is the typical usage level?

0.5 – 5 %.

Q4: Can it be used for medical or injection purposes?

No. The TDS states that the product is designed, manufactured and developed solely for general industrial use; it must never be implanted into or injected into the human body.

Q5: Is solubility / compatibility information available?

The TDS states “Information not available.”

Q6: Are the particle size and specific gravity fixed specification values?

No. The TDS notes that these are “not specific values” and are provided for technical reference only.