Product Name: Dimethyl siloxane cyclics mixture
Alias: DMC
Molecular formula: [(CH3)2SiO]n, n=3~7
CAS No.: 69430-24-6
Product standard: GB/T 20436-2006
Technical index:
1. Appearance: colorless, odorless transparent oil liquid
2. Chroma / platinum cobalt scale /Hazen units ≤10
3. Refractive index nd20: 1.3960~1.3970
4. Acidity (HCL) (%): ≤0.001
5. Hexamethyldisiloxane (%) : ≤0.005
6. Cyclics (%) : ≥99.80
7. Octamethylcyclotetrasiloxane (%): ≥80
Performance and application:
DMC is a colorless, flammable, insoluble in water, soluble in benzene and other organic solvents, viscosity is about 2.1~2.5mm ²/s, the freezing point is 0℃~5℃. Become organic silicon polymer under acid and alkali catalytic polymerization, which is used in the production of silicone oil, silicone rubber, and so on.