-
Name
SILANOL TERMINATED POLYDIMETHYLSILOXANE
- EINECS 615-070-3
- CAS No. 70131-67-8
- Density 0.98 g/mL at 25 °C
- Solubility Soluble in carbon tetrachloride, benzene, chloroform, diethyl ether, toluene and other organic solvents. Insoluble in water and ethanol.
- Melting Point <-60°C
- Formula HO[-Si(CH3)2O-]nH
- Boiling Point 182 °C
- Molecular Weight 45.09284
- Flash Point 155 °F
- Transport Information
- Appearance
- Safety 23-24/25-36-26
- Risk Codes 36/37/38
-
Molecular Structure
- Hazard Symbols Xi
- Synonyms Siloxanes and silicones, di-Me, hydroxy-terminated;Hydroxy Silicone Oil;Hydroxy Terminated Silicone;Poly(oxy(dimethylsilylene), alpha-hydro, omega-hydroxy-;Polydimethylsiloxane, hydroxy end-blocked;Silanol-terminated di-Me siloxanes;alpha-Hydro-omega-hydroxypoly(dimethylsiloxane);Siloxanes and Silicones di-Me, hydroxy-terminated 42% in dimethyl hydrolyzate;OH-Polymer;
- PSA 0.00000
- LogP 0.00000
Polysiloxanes di-Me hydroxy-terminated Specification
The systematic name of Polysiloxanes di-Me hydroxy-terminated is Siloxanes and Silicones di-Me, hydroxy-terminated 42% in dimethyl hydrolyzate. With the CAS registry number 70131-67-8, it is also named as Poly(oxy(dimethylsilylene), alpha-hydro, omega-hydroxy-. The product's categories are PDMS Elastomers / Resins Polymer Science; Polysiloxanes; Self Assembly & Contact Printing; Silicones; Stamps for Nanoprint Lithography & Microcontact Printing; Polymer Science. It is colorless viscous liquid which should be sealed in the container and stored in the cool and dry place.
Preparation of Polysiloxanes di-Me hydroxy-terminated: It can be obtained by the telomerization of dimethylcyclosiloxane and hexamethyldisiloxane in the presence of catalytic agent.
Uses of Polysiloxanes di-Me hydroxy-terminated: It is widely used in the afterfinish of synthetic fibers, silk, cotton and other fiber and fabric.
When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin, so people should not breathe vapour and avoid contact with skin and eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing.
The following are the toxicity data which has been tested.
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rabbit | LD50 | skin | > 16mL/kg (16mL/kg) | KIDNEY, URETER, AND BLADDER: OTHER CHANGES | National Technical Information Service. Vol. OTS0572497, |
| rabbit | LD50 | skin | > 2gm/kg (2000mg/kg) | National Technical Information Service. Vol. OTS0590158, | |
| rat | LC50 | inhalation | > 8750mg/m3/7H (8750mg/m3) | LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES | National Technical Information Service. Vol. OTS0590158, |
| rat | LD50 | oral | > 64mL/kg (64mL/kg) | GASTROINTESTINAL: OTHER CHANGES LIVER: OTHER CHANGES | National Technical Information Service. Vol. OTS0572497, |
| rat | LD50 | oral | > 15400mg/kg (15400mg/kg) | SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) KIDNEY, URETER, AND BLADDER: URINE VOLUME INCREASED | National Technical Information Service. Vol. OTS0590158, |
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