Dimethoxy-di(propan-2-yl)silane

C8H20O2Si

dimethoxy-di(propan-2-yl)silane

CAS18230-61-0
GHS02 Gefahrensymbol: Entzündbar – Flamme
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
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Identification

CAS Number
18230-61-0
EC Number
421-540-7
UN Number
1993
Index Number
014-031-00-2
PubChem CID
87520

Physical-chemical properties

Molecular Formula
C8H20O2Si
Molar Mass
176.33 g/mol
IUPAC Name
dimethoxy-di(propan-2-yl)silane

Chemical Identifiers

InChI
InChI=1S/C8H20O2Si/c1-7(2)11(9-5,10-6)8(3)4/h7-8H,1-6H3
InChI Key
VHPUZTHRFWIGAW-UHFFFAOYSA-N

Overview

Dimethoxy-di(propan-2-yl)silane (CAS 18230-61-0) is an organosilicon compound with flammable and skin-sensitizing properties used in industrial chemical applications. This organosilicon compound, with the molecular formula C8H20O2Si and a molecular weight of 176.33 g/mol, belongs to the family of alkoxysilanes that serve as important intermediates in silicon chemistry. The compound features two methoxy groups and two isopropyl substituents attached to a central silicon atom, giving it unique reactivity characteristics that make it valuable for various industrial processes. From a safety perspective, dimethoxy-di(propan-2-yl)silane is classified as a flammable liquid (Category 3) and presents moderate hazards including skin irritation and sensitization potential. The compound carries a Warning signal word and requires appropriate handling procedures under ADR Class 3 transport regulations. Its GHS02 and GHS07 pictograms indicate both fire and health hazards that necessitate proper personal protective equipment and ventilation during use. The compound finds applications primarily in the synthesis of specialized silicone materials and as a coupling agent in surface modification processes. It serves as a precursor for the production of modified silica surfaces and can be utilized in the development of advanced polymer composites. Unlike simpler compounds such as 4-methoxy-4-methylpentan-2-one, this organosilicon derivative offers unique cross-linking capabilities that are particularly valuable in materials science applications. Industrial users also employ dimethoxy-di(propan-2-yl)silane in the formulation of adhesion promoters and in the preparation of hydrophobic surface treatments. Its reactivity profile makes it suitable for applications requiring controlled hydrolysis and condensation reactions. OYSI maintains reliable supply chains for dimethoxy-di(propan-2-yl)silane to support European industrial customers requiring this specialized organosilicon compound.

Safety & Classification

Warning
Classification:

Flam. Liq. 3; Skin Irrit. 2; Skin Sens. 1; Aquatic Chronic 3

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H226

Flammable liquid and vapour.

H315

Causes skin irritation.

H317

May cause an allergic skin reaction.

H412

Harmful to aquatic life with long lasting effects.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Skin Contact

Irritant

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number1993
ADR Class3
Packing GroupIII
Tunnel CodeD/E
Proper Shipping NameDiisopropyldimethoxysilan
Marine PollutantNo

Frequently Asked Questions

What is dimethoxy-di(propan-2-yl)silane?

Dimethoxy-di(propan-2-yl)silane is an organosilicon compound with the molecular formula C8H20O2Si and CAS number 18230-61-0. This chemical features two methoxy groups and two isopropyl groups attached to a central silicon atom, giving it a molecular weight of 176.33 g/mol. It belongs to the alkoxysilane family and is classified as a flammable liquid with potential skin irritation and sensitization properties.

What are the physicochemical properties of dimethoxy-di(propan-2-yl)silane?

Dimethoxy-di(propan-2-yl)silane is a liquid organosilicon compound at room temperature with moderate volatility typical of alkoxysilanes. Like most alkoxysilanes, it is likely colorless to pale yellow and has a characteristic alcoholic odor. The compound is sensitive to moisture and will hydrolyze in the presence of water, forming silanols and methanol. Its flammable nature indicates moderate volatility and organic solvent-like properties.

What is dimethoxy-di(propan-2-yl)silane used for?

Dimethoxy-di(propan-2-yl)silane is primarily used as a coupling agent and surface modifier in various industrial applications. It serves in the production of silicone polymers, surface treatments for glass and metals, and as an intermediate in the synthesis of specialized organosilicon compounds. Its methoxy groups allow for controlled hydrolysis reactions, making it valuable in sol-gel processes and adhesion promotion between organic and inorganic materials.

How to handle dimethoxy-di(propan-2-yl)silane safely?

Dimethoxy-di(propan-2-yl)silane must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing to prevent skin contact. Work should be conducted in well-ventilated areas or under fume extraction due to its flammable nature and potential for skin irritation and sensitization. Avoid ignition sources and ensure grounding of equipment. Immediate skin washing is essential if contact occurs.

How to store dimethoxy-di(propan-2-yl)silane correctly?

Dimethoxy-di(propan-2-yl)silane should be stored in tightly sealed containers in a cool, dry place away from heat sources, sparks, and open flames due to its flammable classification. Keep containers in a well-ventilated area and protect from moisture to prevent hydrolysis. Store separately from incompatible materials such as strong acids, bases, and oxidizing agents. Maintain storage temperatures below 25°C for optimal stability.

What to do in case of contact with dimethoxy-di(propan-2-yl)silane?

Immediate skin contact with dimethoxy-di(propan-2-yl)silane requires washing the affected area with plenty of soap and water for at least 15 minutes and removing contaminated clothing. For eye contact, rinse thoroughly with clean water for 15 minutes and seek medical attention. If inhaled, move to fresh air immediately. Given its skin sensitization potential, monitor for allergic reactions and seek medical advice if irritation persists or develops.

How to dispose of dimethoxy-di(propan-2-yl)silane appropriately?

Dimethoxy-di(propan-2-yl)silane waste must be disposed of through authorized hazardous waste collection services in compliance with local and European waste regulations. The material cannot be disposed of down drains or in regular waste due to its flammable and potentially harmful properties. Small quantities should be allowed to evaporate in a well-ventilated area under controlled conditions, while larger amounts require professional hazardous waste treatment.

How to transport dimethoxy-di(propan-2-yl)silane?

Dimethoxy-di(propan-2-yl)silane is classified under ADR Class 3 (flammable liquids), Packing Group III for transportation. Packages must be properly labeled with appropriate hazard labels and shipped in UN-approved packaging suitable for flammable liquids. Transportation documents must include proper shipping names and hazard classifications. Vehicles must carry appropriate fire extinguishing equipment and drivers require ADR training for dangerous goods transport.

Is dimethoxy-di(propan-2-yl)silane subject to special regulations?

Dimethoxy-di(propan-2-yl)silane is subject to standard chemical regulations including REACH registration requirements in Europe and CLP classification for hazard communication. It is not currently listed as a Substance of Very High Concern (SVHC). Users must comply with workplace safety regulations, proper labeling with GHS02 and GHS07 pictograms, and the 'Warning' signal word, along with standard industrial chemical handling and reporting requirements.

Where to buy dimethoxy-di(propan-2-yl)silane in Europe?

Dimethoxy-di(propan-2-yl)silane is available through OYSI, a specialized European distributor of technical chemicals and organosilicon compounds. OYSI provides reliable supply chains across Europe with proper documentation, safety data sheets, and regulatory compliance support. As a professional chemical distributor, OYSI ensures product quality, appropriate packaging, and adherence to transportation regulations for safe delivery to industrial customers throughout European markets.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.