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| CAS No.: | 27306-78-1 |
|---|---|
| Name: | Poly(oxy-1,2-ethanediyl),a-methyl-w-[3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]-1-disiloxanyl]propoxy]- |
| Molecular Structure: | |
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| Formula: | (C2H4O)n·C11H30O3Si3 |
| Molecular Weight: | 338.66300 |
| Synonyms: | Glycols,polyethylene, methyl 3-[1,3,3,3-tetramethyl-1-(trimethylsiloxy)disiloxanyl]propylether (8CI);Poly(oxy-1,2-ethanediyl), a-methyl-w-[3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]disiloxanyl]propoxy]-(9CI);3-Oxa-2,4-disilaheptan-1-ol, 2,2,4-trimethyl-4-(trimethylsiloxy)-,monoether with polyethylene glycol (8CI);Pentra-Bark;Silwet L 77; |
| EINECS: | 608-078-3 |
| Density: | 1.035 g/cm3 |
| Melting Point: | #NAME? |
| Boiling Point: | 200 13mm |
| Flash Point: | >230 °F |
| Solubility: | N/A |
| Appearance: | N/A |
| Hazard Symbols: | Xi |
| Risk Codes: | 36/37/38 |
| Safety: | 26-36 |
| Transport Information: | N/A |
| PSA: | 36.92000 |
| LogP: | 3.81450 |
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The Polyalkyleneoxide modified heptamethyltrisiloxane, with the CAS registry number 27306-78-1, is also known as Glycols, polyethylene, methyl 3-[1,3,3,3-tetramethyl-1-(trimethylsiloxy)disiloxanyl]propylether (8CI). It belongs to the product category of Polymers. This chemical's molecular formula is (C2H4O)n·C11H30O3Si3.This chemical's classification code is TSCA Flag XU.
Physical properties about Polyalkyleneoxide modified heptamethyltrisiloxane are:(1) Melting Point: -14 °C; (2) Boiling Point: 200 13mm; (3) Density: 1.035 g/cm3; (4) Index of Refraction: 1.455; (5) Flash Point: >230 °C.
When you are dealing with Polyalkyleneoxide modified heptamethyltrisiloxane, you should be very careful. This chemical is irritating to eyes, respiratory system, skin and may cause inflammation to the skin or other mucous membranes. Therefore, you should wear suitable protective clothing. And in case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice.
The toxicity data is as follows:
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rat | LC50 | inhalation | 2gm/m3/4H (2000mg/m3) | National Technical Information Service. Vol. OTS0571774-1, | |
| rat | LD50 | intraperitoneal | 250uL/kg (0.25mL/kg) | National Technical Information Service. Vol. OTS0571467, | |
| rat | LD50 | oral | 4920uL/kg (4.92mL/kg) | National Technical Information Service. Vol. OTS0571467, |
