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DM 350 (Dimethicone 350) is a medium viscosity Dimethyl Polysiloxane used used in a variety of Personal Care and Industrial applications.
DM 350 (Dimethicone 350) adds silky softness to hair formulations, improves spreadability and provides lubricity in lotions, is non-sticky, long-lasting, and improves water repellency.
DM 350 (Dimethicone 350) is recommended for hair care, skin care, and cosmetic products.
CAS: 9006-65-9
MF: C6H18OSi2
MW: 162.37752
Synonyms
SILCOREL(R) ADP1000 ANTIFOAM COMPOUND;SILICONE OIL DC 200;SILICONE FLUID;REDUCED VOLATILITY POLYDIMETHYLSILOXANE;POLYDIMETHYLSILOXANE 158'000;POLYDIMETHYLSILOXANE 16'000;POLYDIMETHYLSILOXANE 173'000;POLYDIMETHYLSILOXANE 1'850
Dimethicone;Dimethicone 350;Dimeticone;Dow Corning 1664;DC 1664;Viscasil 5M;Mirasil DM 20;Belsil DM 1000;EY 22-067;Viscasil 330M;DC 1428;Visosal 330M;Dow Corning 5-7137;Belsil DM 1 Plus;Belsil DM 200;Belsil DM 35;Viscasil 330000;KF 96A50CS;Dow Corning 200/100 cSt Fluid;Dow Corning 200 Fluid 350 c/s;DC 200-10cS;DC 200-100cS;Mirasil DME 2;Mirasil DME 30;DC 5-2117;Dow Corning 5-2117;TSF 451-1MA;Silicone Fluid 350;KM 910;Dimethicone 245;HL 88;Belsil DM 100;Mirasil DM 350;Dow Corning 200/5 cst;Silkonoel AK 500;Hedrin;Dow Corning 100-350CS;DC 100-350CS;Clearocast 100;E 1049;Dow Corning 365 Dimethicone NF Emulsion;Dow Corning 365;M 620;Dow Corning 200 Fluid 5cSt;Dow Corning 200/10CST;Dow Corning 1413;NYDA sensitiv;Dow Corning 5-7139;HL 999;KHS 7;Xiameter PMX 200;DC 200 Fluid;Xiameter MEM 1664;Xiameter 300;Belsil DM 1;DMF 5CS;Dow Corning 1618;Dow Corning 1132;DC 1618;DC 1132;Wacker-Belsil DM 1 Plus;Momentive SE 30 Gum;NYDA;PMX 200;Belsil DM 5;Mirasil DM 300000;Jeesile 110;Dimethicone 5CS;Gransil 530;BY 22-050;Dimethisil DM 20;DC 5-7137;HZ 201;SH 200C10CS-JASU;Acesil 350;KT 5050;CF 2002DM;Belsil DM 2;Xiameter PMX 200 Silicone Fluid 350;Baysilone oil M 3;Baysilone oil M 5;Baysilone oil M 10;Baysilone oil M 20;Baysilone KT 3;Baysilone KT 5;Baysilone KT 10;Baysilone KT 20;Silsoft DML;Dowsil SH 200C10CS;SH 200C10CS;SF 1000N5CST;1133042-33-7;1903778-83-5;2056106-62-6;2095814-32-5;2098353-89-8
DM 350 (Dimethicone 350) has a viscosity of 350 at 25ºC.
A polydimethylsiloxane macromolecule, composed of dimethylsiloxane repeating units.
DM 350 (Dimethicone 350) is a common ingredient used in various personal care products like lotions, shampoos, and conditioners.
DM 350 (Dimethicone 350) is a silicone based polymer that is used as an emollient and skin protectant.
This highly versatile ingredient has several properties that make DM 350 (Dimethicone 350) a popular choice for cosmetics and skincare formulations.
DM 350 (Dimethicone 350) has several characteristics that make it a desirable ingredient in personal care products.
DM 350 (Dimethicone 350) is non-toxic, non-comedogenic, and non-irritating.
Additionally, DM 350 (Dimethicone 350) provides a smooth and silky texture to the skin, making it ideal for cosmetic formulations.
DM 350 (Dimethicone 350) is also useful in preventing moisture loss from the skin by forming a barrier over it.
DM 350 (Dimethicone 350) is an orally active biochemical assay reagents consisting of a fully methylated linear siloxane polymer whose ends are blocked by trimethylsiloxane units.
DM 350 (Dimethicone 350) can lubricate hair and physically block the respiratory system of lice to remove lice.
DM 350 (Dimethicone 350) has potential applications in cosmetics and daily cleaning products.
DM 350 (Dimethicone 350) Chemical Properties
Density: 1 g/mL at 20 °C
Vapor pressure: 5 mm Hg ( 20 °C)
Refractive index: n20/D 1.406
Fp: 121 °C
Storage temp.: Refrigerator
Solubility: Practically insoluble in water, very slightly soluble or practically insoluble in anhydrous ethanol, miscible with ethyl acetate, with methyl ethyl ketone and with toluene.
Color: Colourless
Stability: Stable. Combustible. Incompatible with strong oxidizing agents, reducing agents, organics, acids, alkalis. Corrodes many metals.
InChI: InChI=1S/C6H18OSi2/c1-8(2,3)7-9(4,5)6/h1-6H3
InChIKey: UQEAIHBTYFGYIE-UHFFFAOYSA-N
LogP: 3.646 (est)
CAS DataBase Reference: 9006-65-9
EPA Substance Registry System: DM 350 (Dimethicone 350) (9006-65-9)
DM 350 (Dimethicone 350) is clear, colorless liquids available in various viscosities.
DM 350 (Dimethicone 350) is a fluid mixture of fully methylated linear siloxane polymers end-blocked with trimethylsiloxy units.
DM 350 (Dimethicone 350) is a linear monomethyl polysiloxane.
DM 350 (Dimethicone 350) is safe as used in cosmetic formulations, vulcanization.
Physical and chemical properties
DM 350 (Dimethicone 350) is also known as methyl silicone oil and polydimethylsiloxane liquid.
DM 350 (Dimethicone 350) appears as colorless transparent viscous liquid, being tasteless, odorless and non-toxic.
The molecular formula is CH3 [Si (cH3) 2] nSi (CH3) 3.
The average molecular weight is 5000 ~ 100000.
Based on the differences on the molecular weight, kinematic viscosity varies from 1.0 × 10-6 ~ 100000 × 10-6 square meters / second.
Long-term use temperature range is -50 ~ 180 ℃.
In isolated air or inert gas, DM 350 (Dimethicone 350) can be subject to long-term use at 200 ℃.
Viscosity coefficient: 0.31 ~ 0.61.
Surface tension: 1.59 ~ 2.15 × 10-4N / cm.
Dielectric constant (23 ℃, 100Hz): 2.18 ~ 2.17. Volume resistivity (23 °C): 1.0 × 1014 to 1.0 × 1016Ωcm3.
Dielectric loss tangent (23 ℃, 100Hz):0.00002~0.00004. Breakdown voltage strength: 13.7 ~ 17.7kV / mm.
DM 350 (Dimethicone 350) is soluble in benzene, toluene, xylene and ethyl ether, partially soluble in ethanol, butanol and acetone, insoluble in cyclohexanol, methanol, paraffin oil and vegetable oil.
DM 350 (Dimethicone 350) has excellent hydrophobic moisture resistance, good light transmission, and chemical stability.
Widely used in insulation, heat, moisture-proof filler, defoamer, mold release agent, lubricant and surface treatment agent.
DM 350 (Dimethicone 350) is produced by the reaction between octamethylcyclotetrasiloxane and hexamethyldisiloxane in the presence of concentrated sulfuric acid or tetramethylammonium hydroxide catalyst.
Uses
DM 350 (Dimethicone 350) is a form of silicone used to give products lubricity, slip, and good feel.
DM 350 (Dimethicone 350) can also serve as a formulation defoamer and help reduce the feeling of greasiness that some creams leave on the skin immediately upon application.
In addition, dimethicone is reported to protect the skin against moisture loss when used in larger quantities.
DM 350 (Dimethicone 350) improves product flow and spreadability.
In combination with other ingredients, dimethicone becomes a good waterproofing material for sunscreen emulsions, and helps reduce the greasiness often seen in high-SPF preparations.
A silicone oil consisting of a mixture of fully methylated linear siloxane polymers end-blocking with trimethylsiloxy units.
Commonly used in skin and hair products.
DM 350 (Dimethicone 350) is widely used in the personal care industry as an emollient, skin protectant and hair conditioning agent.
DM 350 (Dimethicone 350) is used in various products like shampoos, conditioners, body lotions, and anti-aging creams.
DM 350 (Dimethicone 350) is considered safe for human use and is cleared for use by the US Food and Drug Administration (FDA).
DM 350 (Dimethicone 350) is widely used as a release agent for various materials such as plastics and rubber, with excellent high and low temperature resistance, transparency, electrical properties, hydrophobicity, moisture resistance, and chemical stability.
Generally used for high-temperature demolding of large molded products, such as phenolic resin and unsaturated polyester laminates.
Pharmaceutical Applications
DM 350 (Dimethicone 350) of various viscosities are widely used in cosmetic and pharmaceutical formulations.
In topical oil-in-water emulsions DM 350 (Dimethicone 350) is added to the oil phase as an antifoaming agent.
DM 350 (Dimethicone 350) is hydrophobic and is also widely used in topical barrier preparations.
Therapeutically, DM 350 (Dimethicone 350) may be used with simethicone in oral pharmaceutical formulations used in the treatment of flatulence.
DM 350 (Dimethicone 350) is also used to form a waterrepellent film on glass containers.
Production Methods
DM 350 (Dimethicone 350) isapoly (dimethylsiloxane) obtained by hydrolysis and polycondensation of dichlorodimethylsilane and chlorotrimethylsilane.
The hydrolysis products contain active silanol groups through which condensation polymerization proceeds.
By varying the proportions of chlorotrimethylsilane, which acts as a chain terminator, silicones of varying molecular weight may be prepared.
Different grades of DM 350 (Dimethicone 350) is produced that may be distinguished by a number placed after the name indicating the nominal viscosity.
For example, ABIL 20 (Evonik Goldschmidt UK Ltd) has a nominal kinematic viscosity of 18–22mm2/s (18–22cSt).
Toxicity
DM 350 (Dimethicone 350) has no obvious acute and chronic poisoning reaction to human beings and mammals, nor be mutagenic and carcinogenic.
Oral, inhalation and skin contact have no obvious irritation or allergic reaction to the eyes, skin, and can’t be absorbed by the gastrointestinal tract and skin.
