Dibenzyldichlorosilane.

Description

A colorless, corrosive liquid. Hazard Vaporpressure 5 ,1. Identification (based on NFPA-704 MRating System): Health 3, Flammability 1, Reactivity 2 .Reacts with water

Chemical Properties

A colorless, corrosive liquid. Hazard Vapor pressure=﹤ 1. identification (based on NFPA-704 M Rating System): Health 3, Flammability 1, Reactivity 2?. Reacts with water, rapidly releasing corrosive hydrogen chloride gas.

Potential Exposure

This material is used as an intermedi- ate in the production of silicone polymers.

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least30 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. If victim is conscious, administer water ormilk. Do not induce vomiting. Medical observation isrecommended for 2448 h after breathing overexposure, aspulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consideradministering a corticosteroid spray.

storage

Color Code—White: Corrosive or Contact Hazard;Store separately in a corrosion-resistant location. Prior toworking with this chemical you should be trained on itsproper handling and storage. Store in tightly closed containers in a cool, well-ventilated area away from combustiblematerials and any form of moisture. Where possible, automatically pump liquid from drums or other storage containers to process containers.

Shipping

UN2434 Dibenzyldichlorosilane, Hazard class: 8; Labels: 8-Corrosive material.

Incompatibilities

Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explo- sions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides. Chlorosilanes react vigorously with bases and both organic and inorganic acids generating toxic and/or flammable gases. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous hydrogen.

Short Term Exposure

The health effects are not wellknown at this time. However, closely related chemicalscause irritation of the eyes, nose, throat, and lungs.Dibenzyl dichlorosilane is a corrosive chemical and cancause severe eye and skin burns. This substance can giveoff corrosive hydrogen chloride gas on contact with water,steam, or moisture. It is possible that higher exposures maycause pulmonary edema, a medical emergency that can bedelayed for several hours. This can cause death.

Long Term Exposure

Although it is not known if thischemical causes lung problems, similar corrosive or highlyirritating substances may affect the lungs.

Personal Protective Methods

Wear protective gloves andclothing to prevent any reasonable probability of skin contact. Safety equipment suppliers/manufacturers can provide recommendations on the most protective glove/clothing material for your operation. All protective clothing (suits, gloves, footwear, headgear) should be clean,available each day, and put on before work. Contact lensesshould not be worn when working with this chemical.Wear splash-proof chemical goggles and face shield unlessfull face-piece respiratory protection is worn. Employeesshould wash immediately with soap when skin is wet orcontaminated. Provide emergency showers and eyewash.

Fire Extinguishing

Dibenzyldichlorosilane may burn butdoes not readily ignite. Use dry chemical, CO2, or foamextinguishers. Poisonous gases are produced in fire. Vaporsare heavier than air and will collect in low areas. If materialor contaminated runoff enters waterways, notifyDibenzyldichlorosilane 887downstream users of potentially contaminated waters.Notify local health and fire officials and pollution controlagencies. From a secure, explosion-proof location, usewater spray to cool exposed containers. If cooling streamsare ineffective (venting sound increases in volume andpitch, tank discolors, or shows any signs of deforming),withdraw immediately to a secure position. If employeesare expected to fight fires, they must be trained andequipped in OSHA 1910.156. The only respirators recommended for firefighting are self-contained breathing apparatuses that have full face-pieces and are operated in apressure-demand or other positive-pressure mode.

Raw materials

Preparation Products