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Hexamethyldisiloxane

Hexamethyldisiloxane Structure
CAS No.
107-46-0
Chemical Name:
Hexamethyldisiloxane
Synonyms
HMDSO;HMDO;DISILOXANE;1,1,1,3,3,3-Hexamethyldisiloxane;SILICONE FLUID;Fluka AG;Hexamethylene disiloxane;hexamethyldisiloxane(hmdo);os10;H7310
CBNumber:
CB2446352
Molecular Formula:
C6H18OSi2
Molecular Weight:
162.38
MOL File:
107-46-0.mol
MSDS File:
SDS
Modify Date:
2023/12/22 17:53:22
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Hexamethyldisiloxane Properties

Melting point −59 °C(lit.)
Boiling point 101 °C(lit.)
Density 0.764 g/mL at 20 °C(lit.)
vapor density >1 (vs air)
vapor pressure 20 hPa (20 °C)
refractive index n20/D 1.377(lit.)
Flash point 33 °F
storage temp. Store below +30°C.
solubility 0.00037g/l insoluble
form liquid
Specific Gravity 0.76
color Colorless to Almost colorless
explosive limit 0.5-21.8%(V)
Water Solubility insoluble
Hydrolytic Sensitivity 1: no significant reaction with aqueous systems
BRN 1736258
Dielectric constant 2.2（20℃）
Stability Stable, but moisture sensitive. Highly flammable. Incompatible with strong acids, strong bases, oxidizing agents.
InChIKey UQEAIHBTYFGYIE-UHFFFAOYSA-N
LogP 5.06 at 20℃
CAS DataBase Reference 107-46-0(CAS DataBase Reference)
NIST Chemistry Reference Disiloxane, hexamethyl-(107-46-0)
EPA Substance Registry System Hexamethyldisiloxane (107-46-0)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS02,GHS09
Signal word  Danger
Hazard statements  H225-H410
Precautionary statements  P210-P273
Hazard Codes  F,N,T
Risk Statements  11-50/53-65-51/53-48/23/24/25-36/38-46-45
Safety Statements  16-61-62-45-26-53
RIDADR  UN 1993 3/PG 2
WGK Germany  3
RTECS  JM9237000
F  10
Autoignition Temperature 340 °C
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  29310095
Toxicity LD50 orally in Rabbit: > 12160 mg/kg LD50 dermal Rat > 2000 mg/kg
NFPA 704
4
2 1

Hexamethyldisiloxane price More Price(21)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) 8.14051 Hexamethyldisiloxane for synthesis 107-46-0 100ML ₹7160 2022-06-14 Buy
Sigma-Aldrich(India) 8.14051 Hexamethyldisiloxane for synthesis 107-46-0 500ML ₹7410.01 2022-06-14 Buy
Sigma-Aldrich(India) 8.14051 Hexamethyldisiloxane for synthesis 107-46-0 20KG ₹73409.99 2022-06-14 Buy
Sigma-Aldrich(India) 52630 Hexamethyldisiloxane puriss., ≥98.5% (GC) 107-46-0 100ML ₹1959.33 2022-06-14 Buy
Sigma-Aldrich 52630 Hexamethyldisiloxane puriss., ≥98.5% (GC) 107-46-0 500ML ₹7729.05 2022-06-14 Buy
Product number Packaging Price Buy
8.14051 100ML ₹7160 Buy
8.14051 500ML ₹7410.01 Buy
8.14051 20KG ₹73409.99 Buy
52630 100ML ₹1959.33 Buy
52630 500ML ₹7729.05 Buy

Hexamethyldisiloxane Chemical Properties,Uses,Production

Chemical Properties

Hexamethyldisiloxane (HMDS) is a colorless or yellowish transparent liquid with a measured melting point of -68.2°C and a measured boiling point of 100.5°C at 1013 hPa. The measured vapor pressure is 44.51 hPa at 20 oC. The measured water solubility is 0.93 ± 0.63 mg/L at 23 oC. The measured log Kow of HMDS is 5.20 at 20 oC. Estimated log Koc values using EPISuite v 4.10 range from 2.5 (MCI method) to 4.5 (Kow method). As Episuite does not contain fragments for siloxanes for log Koc predictions, these values should be treated with caution. The potential for hydrolysis of the test substance may have influenced the determination of partition coefficient and water solubility.

Physical properties

Hexamethyldisiloxane is a colorless and transparent liquid. It is easily deliquescent, flammable, and has the risk of causing combustion when exposed to high heat, open flame, and strong oxidizing agents. Boiling point 99.5℃. Flash point -1.1℃. Relative density (d2525) 0.7606. refractive index 1.3750. insoluble in water, soluble in many organic solvents.

Uses

Hexamethyldisiloxane is used as a base fluid in a wide range of personal care products that require fast evaporation and high spreadability. When blended with Dimethicone fluids, It can adjust the residence time of the silicone on the skin. Unlike other volatile fluids, Hexamethyldisiloxane Fluid does not cool the skin as it evaporates. Hexamethyldisiloxane is used as a carrying agent and diluent in the following: skin cream lotions, bath oils, suntan lotions, nail polishes, antiperspirants, deodorants, hair sprays and other beauty and hair care products.
A silicon based compound that can be used to create potentially biocompatible materials.
Used as a monomer in the synthesis of long chain polysiloxane structures.
Used in the methylation of mercury(II) salts.

Production Methods

Produced via acid hydrolysis of chlorotrimethylsilane and purification by distillation.

Definition

ChEBI: Hexamethyldisiloxane is an organosiloxane consisting of two trimethylsilyl groups covalently bound to a central oxygen.

General Description

Hexamethyldisiloxane (HMDSO), a linear polydisiloxane, is an organosilicon reagent commonly utilized as a source for plasma enhanced chemical vapor deposition (PE-CVD) of thin films of silicon compounds. It is also employed as a substitute to silane in silicon integrated circuit technology. Its dissociative ionization by electron impact has been studied by Fourier transform mass spectrometry. Synthesis of plasma-polymerized HMDSO thin films by atmospheric pressure glow (APG) discharge has been reported. Crystals of HMDSO at 148K are monoclinic. Addition of HMDSO to P4S10, improves its efficiency as thionating agent.

Purification Methods

Fractionally distil through a column packed with glass helices with ca 15 theoretical 20 1.3777. plates. It is highly flammable and is an irritant. [Mills & McKenzie J Am Chem Soc 76 2672 1954, Csakvari et al. J Organometal Chem 107 287 1976, Beilstein 4 IV 4018.]

Hexamethyldisiloxane Preparation Products And Raw materials

Raw materials

N-Methylaniline 101 Chlorotrimethylsilane (chlorodifluoroMethyl)triMethylsilane Silane, trimethyl(trifluoroethenyl)-
Silane, 1,1'-(difluoromethylene)bis[1,1,1-trimethyl- (Difluoromethyl)trimethylsilane CHLORODIMETHYLVINYLSILANE 1,1,1,3,5,5,5-Heptamethyltrisiloxane Divinyltetramethyldisiloxane
VINYLPENTAMETHYLDISILOXANE 1,1,1,3,3,5,5-HEPTAMETHYLTRISILOXANE DECAMETHYLTETRASILOXANE Pentamethyldisiloxane
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Preparation Products

Iodotrimethylsilane 5-(CHLOROMETHYL)-2-(TRIFLUOROMETHYL)THIAZOLE (2-(TRIFLUOROMETHYL)THIAZOL-5-YL)METHANOL 2-BROMO-1-(2-(TRIFLUOROMETHYL)THIAZOL-5-YL)ETHANONE 1,2-DIIODOETHANE
ETHYL 2-(TRIFLUOROMETHYL)THIAZOLE-5-CARBOXYLATE 2-(TRIFLUOROMETHYL)THIAZOLE-5-CARBALDEHYDE Xanthophyll Dibutyl sulfide
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Hexamethyldisiloxane Suppliers

Global( 520)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
SUJALAM CHEMICALS +91-9422560788 +91-9422560788 Maharashtra, India 42 58 Inquiry
JSK Chemicals +919879767970 Gujarat, India 3756 58 Inquiry
Covalent Incorporation +91-9033666099 +91-9033666099 Gujarat, India 50 58 Inquiry
Rivashaa Agrotech Biopharma Pvt. Ltd. +91-26463395 +91-7926462688 Gujarat, India 1615 58 Inquiry
Shree Ganesh Life Sciences (Shree Ganesh Group) +91-8490036186 +91-8490036186 Gujarat, India 6 58 Inquiry
Chemcon Speciality Chemicals Ltd +91-9160114805 +91-8238046419 Gujarat, India 9 58 Inquiry
ALPHA CHEMIKA +91-22-22061123 +91-22-66382501 Mumbai, India 1681 43 Inquiry
Scientific OEM +91-22- 2343 7546 / 2341 3094 New Delhi, India 1996 38 Inquiry
CHEMSWORTH +91-261-2397244 New Delhi, India 6707 30 Inquiry
A.J Chemicals 91-9810153283 New Delhi, India 6124 58 Inquiry
Supplier Advantage
SUJALAM CHEMICALS 58
JSK Chemicals 58
Covalent Incorporation 58
Rivashaa Agrotech Biopharma Pvt. Ltd. 58
Shree Ganesh Life Sciences (Shree Ganesh Group) 58
Chemcon Speciality Chemicals Ltd 58
ALPHA CHEMIKA 43
Scientific OEM 38
CHEMSWORTH 30
A.J Chemicals 58

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Hexamethyldisiloxane,NMRgrade Silicone A HEXAMETHYLDISILOXANE NMR GRADE: 99.9% POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED: VISCOSITY 0.65 CST. HEXAMETHYLDISILOXANE PURE 99% bis-trimethylsilyloxide CH7310 DC 200 FLUID Disiloxane,hexamethyl- H7310 hexamethyl-disiloxan kf96l ls-7130 HMDSO, MM HEXAMETHYLDISILOXANE 99.9% Hexamethyldisiloxane ,97% 1,3-Dimethyl-1,1,3,3-tetramethylpropanedisiloxane Hexamethylpropanedisiloxane Poly(dimethylsiloxane),HMDSO, Hexamethyldisiloxane HexaMethyldisiloxane, 98+% 100ML HexaMethyldisiloxane, 98+% 500ML DC 0.65cs200 Dow Corning 200/0.65 Dow Corning OS 10 EthoxytriMethylsilane-hexaMethyldisiloxane CopolyMer HEXAMETHYLDISILOXANE (CH3)3SiOSi(CH3)3 os10 oxybis(trimethyl-silan Oxybis(trimethylsilane) Silane, oxybis(trimethyl)- sws-f221 2,2,4,4-TETRAMETHYL-3-OXA-2,4-DISILAPENTANE HEXAMETHYLDISILOXANE BIS(TRIMETHYLSILYL)ETHER HEXAMETHYLDISILOXANE, 98+% HEXAMETHYLDISILOXANE, 99.5+%, NMR GRADE HEXAMETHYLDISILOXANE, FOR NMR-SPECTROS-C OPY POLY(DIMETHYLSILOXANE), 200 FLUID, VISCO SITY 0.65 CST HEXAMETHYLDISILOXANE 99+% HEXAMETHYLDISILOXANE, NMR GRADE 99.7% Hexamethyldisiloxane "HMDSO" 97% HEXAMETHYLDISILOXANE (HMDS) HEXAMETHYLDISILOXANE FOR SYNTHESIS HMDO)HexaMethyldisilox HexaMethyldisiloxane NMR grade, >=99.5% HexaMethyldisiloxane puriss., >=98.5% (GC) HexaMethyldisiloxane, 99.7%, NMR grade Glipoxan HX 18 KF 96L0.65 NSC 43346 PSF-0.65cSt SF 0.65 SH 200-0.65CS SH 200-0.65cSt Volasil DM 0.65 Volasil DM 0.65SP Hexamethyldisiloxane viscosity 0.65 cSt (25 C)