Product name: DMC, also known as dimethylsiloxane mixed ring, the primary form of dimethylcyclosiloxane is to use dimethyldichlorosilane as the main raw material, synthesized by hydrolysis, and silicon oxide (Si-O ) bond as the main chain, an organic-inorganic compound directly connected to an organic group on a silicon atom. It is the main intermediate of organosilicon.

【Technical Index】

1. Appearance: colorless and transparent liquid without free water and mechanical impurities;

2. Chromaticity: Hazen unit ≤ 10 (superior product, first-class product);

3. Mass fraction of total rings/%: ≥99.5;

4. Density: (25°C, g/cm3): 0.956~0.958;

5. Refractive index (25°C): 1.3960~1.3970;

6. Viscosity (25°C, mm2/s): ≤8;

7. Chloride ion content (ppm): ≤10.

Short Name

Dimethylcyclosiloxane mixture: DMC for short

It is often called in chemical industry: dimethyl siloxane mixed ring body.

Product Category

Silicone intermediate

Chemical Formula

[(CH3)2SiO]n, n=3,4,5,6

Introduction

The primary form of dimethylcyclosiloxane has a ring-shaped molecular structure, mainly including hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), dodecamethylcyclohexasiloxane (D6), and hexamethylcyclotrisiloxane (D3) and or octamethylcyclotetrasiloxane (D4) and or decamethylcyclopentasiloxane Oxane (D5) and/or dodecamethylcyclohexasiloxane (D6) content is more than 50%, colorless transparent or milky white liquid, flammable, no peculiar smell, insoluble in water, soluble in organic solvents such as benzene.

Use

The primary form of dimethylcyclosiloxane is mainly used for ring-opening polymerization to form silicone oil, silicone rubber and silicone resin with different degrees of polymerization.

These polymers are further processed into products that are widely used in various fields such as construction, electronics, textiles, automobiles, personal care, food, and mechanical processing, and there are also a small amount of direct applications.

【Packaging, storage and transportation】

1. This product is packaged in 210L plastic-lined iron drum or plastic drum (net weight 190kg/drum) or 1000L steel-plastic square drum in sealed packaging or according to customer requirements and in compliance with safety regulations;

2. The dimethylsiloxane mixed ring should be fire-proof, rain-proof, moisture-proof, and impurities such as acid and alkali should be prevented from penetrating during transportation;

3. It is forbidden to use mechanical equipment and tools that are prone to sparks when operating this product; load and unload lightly during handling to avoid leakage of this product due to damage to the container. the

4. The temperature of the storage place of the dimethylsiloxane mixed ring body should be 20 ℃ ~ 40 ℃, and when the temperature is lower than 17 ℃, do a good job of heat preservation and antifreeze. Under standard packaging, transportation and storage conditions, this product has a shelf life of 6 months from the date of production (is it too short). It can be re-inspected after the expiration date, and can continue to be used when the inspection results meet the standard requirements.