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27306-78-1

Basic Information
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:
Molecular Structure of 27306-78-1 (Poly(oxy-1,2-ethanediyl),a-methyl-w-[3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]-1-disiloxanyl]propoxy]-)
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:
Appearance:
Hazard Symbols: Xi
Risk Codes: 36/37/38
Safety: 26-36
Transport Information:
PSA: 36.92000
LogP: 3.81450
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Specification

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,