Dimethoxy-(2-methylpropyl)-propan-2-ylsilane

C9H22O2Si

dimethoxy-(2-methylpropyl)-propan-2-ylsilane

CAS111439-76-0
GHS02 Gefahrensymbol: Entzündbar – Flamme
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
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Identification

CAS Number
111439-76-0
EC Number
402-580-4
UN Number
1993
Index Number
014-009-00-2
PubChem CID
86305

Physical-chemical properties

Molecular Formula
C9H22O2Si
Molar Mass
190.35 g/mol
IUPAC Name
dimethoxy-(2-methylpropyl)-propan-2-ylsilane

Chemical Identifiers

InChI
InChI=1S/C9H22O2Si/c1-8(2)7-12(10-5,11-6)9(3)4/h8-9H,7H2,1-6H3
InChI Key
XFAOZKNGVLIXLC-UHFFFAOYSA-N

Overview

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane (CAS 111439-76-0) is an organosilicon compound with alkoxy functional groups and branched alkyl substituents. This specialized organosilicon chemical belongs to the family of alkoxysilanes, featuring two methoxy groups alongside isobutyl and isopropyl substituents attached to a central silicon atom. With the molecular formula C9H22O2Si and a molecular weight of 190.35 g/mol, this compound exhibits the characteristic reactivity profile of dialkoxysilanes, making it valuable for various industrial applications requiring controlled hydrolysis and condensation reactions. The compound presents as a flammable liquid classified under GHS category 3, requiring appropriate handling precautions due to its fire hazard potential. Safety considerations include its classification as Acute Tox. 4 and Skin Irrit. 2, necessitating proper personal protective equipment during handling and storage. The substance falls under ADR transport class 3, reflecting its flammable nature and specific shipping requirements. Primary industrial applications include its use as a surface treatment agent for improving adhesion between organic and inorganic materials, particularly in composite manufacturing and coating formulations. The compound also serves as a coupling agent in sealant and adhesive systems, where its dual functionality enables chemical bonding between dissimilar substrates. Additionally, it finds application in the modification of mineral fillers to enhance their compatibility with polymer matrices. Like other organosilicon compounds in this category, it shares certain application areas with related chemicals such as 4-methoxy-4-methylpentan-2-one, though each offers distinct reactivity profiles suited to specific formulation requirements. OYSI provides reliable supply of dimethoxy-(2-methylpropyl)-propan-2-ylsilane to support your technical applications across Europe.

Safety & Classification

Warning
Classification:

Flam. Liq. 3; Acute Tox. 4 *; Skin Irrit. 2

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H226

Flammable liquid and vapour.

H332

Harmful if inhaled.

H315

Causes skin irritation.

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

Inhalation

Harmful

Measures if vapours or dust are inhaled

First Aid Actions

  • +P304IF INHALED:
  • +P340Remove person to fresh air and keep comfortable for breathing.
  • +P311Call a POISON CENTER/doctor.

Related hazard statements:

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 NameIsobutylisopropyldimethoxysilan
Marine PollutantNo

Frequently Asked Questions

What is dimethoxy-(2-methylpropyl)-propan-2-ylsilane?

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane is an organosilicon compound with the molecular formula C9H22O2Si and CAS number 111439-76-0. This chemical features a silicon atom bonded to two methoxy groups, one isobutyl group, and one isopropyl group. With a molecular weight of 190.35 g/mol, it belongs to the family of alkoxysilanes used primarily as coupling agents and surface modifiers in various industrial applications.

What are the physicochemical properties of dimethoxy-(2-methylpropyl)-propan-2-ylsilane?

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane is typically a colorless to pale yellow liquid at room temperature with a characteristic aliphatic odor. As an organosilicon compound with alkoxy groups, it exhibits moderate volatility and is sensitive to moisture, hydrolyzing slowly in the presence of water. The compound is generally soluble in organic solvents such as alcohols, ethers, and hydrocarbons but shows limited water solubility due to its hydrophobic alkyl substituents.

What is dimethoxy-(2-methylpropyl)-propan-2-ylsilane used for?

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane is primarily used as a coupling agent and surface modifier in industrial applications. It serves to improve adhesion between organic polymers and inorganic substrates like glass, metals, and fillers. Common applications include composite manufacturing, adhesive formulations, coatings, sealants, and surface treatment of materials. The compound is also utilized in the production of silicone-based materials and as a crosslinking agent in polymer chemistry.

How to handle dimethoxy-(2-methylpropyl)-propan-2-ylsilane safely?

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane requires careful handling due to its flammable nature (Flam. Liq. 3) and potential for acute toxicity and skin irritation. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume hoods to avoid inhalation. Keep away from heat sources, sparks, and open flames. Ground and bond containers during transfer operations to prevent static discharge.

How to store dimethoxy-(2-methylpropyl)-propan-2-ylsilane correctly?

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane should be stored in a cool, dry, well-ventilated area away from heat sources and ignition sources due to its flammable properties. Keep containers tightly sealed and protect from moisture to prevent hydrolysis. Store separately from strong oxidizing agents, acids, and bases. Use original containers or compatible materials resistant to the chemical. Maintain storage temperatures below 25°C and ensure adequate fire prevention measures are in place.

What to do in case of contact with dimethoxy-(2-methylpropyl)-propan-2-ylsilane?

In case of skin contact with dimethoxy-(2-methylpropyl)-propan-2-ylsilane, immediately remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15 minutes and seek medical attention. If inhaled, move to fresh air and seek medical help if breathing difficulties occur. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult safety data sheets for complete first aid procedures.

How to dispose of dimethoxy-(2-methylpropyl)-propan-2-ylsilane properly?

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane must be disposed of according to local and national hazardous waste regulations. As a flammable liquid with toxic properties, it cannot be disposed of in regular waste streams. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities may be incinerated in approved facilities with appropriate emission controls. Never discharge into sewers, waterways, or soil. Consult local environmental authorities for specific disposal requirements in your region.

How to transport dimethoxy-(2-methylpropyl)-propan-2-ylsilane?

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane is classified as ADR Class 3 (flammable liquids), Packing Group III, requiring compliance with dangerous goods transport regulations. Packages must be properly labeled with appropriate hazard labels and markings. Use UN-approved packaging suitable for flammable liquids. Transport vehicles must carry appropriate safety equipment and emergency response information. Drivers require ADR certification for dangerous goods transport. Ensure proper documentation including transport documents and safety data sheets accompany shipments.

Is dimethoxy-(2-methylpropyl)-propan-2-ylsilane subject to specific regulations?

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane is subject to standard chemical regulations including REACH registration requirements in Europe and CLP classification as a flammable liquid with acute toxicity and skin irritation properties. It is not classified as a Substance of Very High Concern (SVHC) under REACH. Users must comply with workplace safety regulations, environmental protection laws, and transport regulations for dangerous goods. Regular safety assessments and appropriate risk management measures are required for commercial use.

Where to buy dimethoxy-(2-methylpropyl)-propan-2-ylsilane in Europe?

Dimethoxy-(2-methylpropyl)-propan-2-ylsilane is available through OYSI, a European distributor of specialty chemicals. OYSI provides reliable supply of high-quality organosilicon compounds to industrial customers across Europe. As an established chemical distributor, OYSI ensures proper handling, packaging, and documentation compliance with European regulations. Contact OYSI directly for availability, specifications, and delivery options to meet your specific application requirements. Professional technical support is available to assist with product selection and applications.

Data Sources

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