Octamethylcyclotetrasiloxane, 98%

Description

CAS: 556-67-2 | C₈H₂₄O₄Si₄ | 296.61 g/mol

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Specifications

Chemical Identifiers

• CAS: 556-67-2
• Molecular Formula: C₈H₂₄O₄Si₄
• Molecular Weight (g/mol): 296.61
• MDL Number: MFCD00003269
• InChI Key: HMMGMWAXVFQUOA-UHFFFAOYSA-N
• Synonym: octamethylcyclotetrasiloxane, cyclotetrasiloxane, octamethyl, oktamethylcyklotetrasiloxan, cyclic dimethylsiloxane tetramer, omcts, nuc silicone vs 7207, union carbide 7207, silicone sf 1173, oktamethylzyklotetrasiloxan, unii-cz227117je
• PubChem CID: 11169
• ChEBI: CHEBI:25640
• IUPAC Name: 2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• SMILES: C[Si]1(O[Si](O[Si](O[Si](O1)(C)C)(C)C)(C)C)C

• CAS Min %: 97.5
• CAS Max %: 100.0
• Melting Point: 17.0°C to 18.0°C
• Color: Colorless
• Density: 0.9560g/mL
• Boiling Point: 175.0°C to 176.0°C
• Flash Point: 56°C
• Infrared Spectrum: Authentic
• Assay Percent Range: 98%
• Packaging: Glass bottle
• Refractive Index: 1.3950 to 1.3970
• Quantity: 25 g
• Beilstein: 04, III, 1885
• Specific Gravity: 0.956
• Merck Index: 15, 6836
• Solubility Information: Solubility in water: insoluble. Other solubilities: soluble in carbon tetrachloride
• Formula Weight: 296.61
• Percent Purity: 98%
• Physical Form: Liquid
• Chemical Name or Material: Octamethylcyclotetrasiloxane

Safety and Handling

Hazard Category	GHS Signal Word: Warning
Hazard Statement	GHS H Statement Suspected of damaging fertility. May cause long lasting harmful effects to aquatic life. Flammable liquid and vapor.
Precautionary Statement	GHS P Statement Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Gently wash with plenty of soap and water. Obtain special instructions before use. IF exposed or concerned: Get medical advice/at
EINECSNumber	209-136-7

SDS

RUO – Research Use Only