Chlorodiphenylmethane CAS 90-99-3

1. Chlorodiphenylmethane is primarily used as a pharmaceutical intermediate, notably in the synthesis of antihistamines like diphenhydramine (Benadryl) , the central nervous system stimulant modafinil, and the H1 receptor antagonist oxatomide .
2. The compound serves as a valuable building block in organic synthesis for creating a variety of fine chemicals, specialty reagents, and more complex molecular structures . Chlorodiphenylmethane CAS 90-99-3 is also employed in polymer chemistry, for instance, as an initiator in controlled radical polymerization .
3. Applications of Chlorodiphenylmethane include its use as a reagent in scientific research to study reaction mechanisms, such as dehydrochlorination with Lewis pairs, and for the synthesis of compounds for biochemical studies .

1. Store Chlorodiphenylmethane in a tightly sealed container under an inert atmosphere (e.g., argon or nitrogen) in a cool, dry, and well-ventilated place, protected from light and moisture . Recommended storage temperatures vary from 2-8°C (refrigerated) to -20°C for long-term stability .
2. Keep Chlorodiphenylmethane strictly away from strong oxidizing agents and strong bases due to incompatibility . It is moisture-sensitive and hydrolyzes upon contact with water .
3. Always use Chlorodiphenylmethane CAS 90-99-3 appropriate personal protective equipment (PPE) including chemical-resistant gloves, tightly fitting safety goggles, and protective clothing . Handle only in a fume hood to avoid inhalation of vapors, mist, or gas .

1. Immediately isolate the spill area, eliminate all ignition sources, and ensure adequate ventilation. Contain Chlorodiphenylmethane using dry, inert, non-combustible absorbent material (e.g., dry sand or universal binder) and prevent entry into drains or waterways .
2. Carefully collect Chlorodiphenylmethane CAS 90-99-3 using non-sparking tools into sealed, labeled corrosion-resistant chemical waste containers for proper disposal according to local, state, and federal environmental regulations .
3. Personnel must wear full chemical-protective equipment including self-contained breathing apparatus (SCBA) during cleanup . Chlorodiphenylmethane is classified for transport (UN3265, Hazard Class 8, Packing Group II) and requires hazardous waste disposal.

1. Chlorodiphenylmethane is classified as a corrosive substance (GHS05, Danger), causing severe skin burns and serious eye damage (H314/H318) . Chlorodiphenylmethane CAS 90-99-3 is also classified by some sources as a skin and eye irritant (H315/H319) with a "Warning" signal word .
2. Chlorodiphenylmethane has a flash point of 160°C and is combustible . Its thermal decomposition or combustion produces toxic and corrosive fumes, including carbon oxides and hydrogen chloride gas . Chlorodiphenylmethane CAS 90-99-3 may be corrosive to metals (H290) .
3. Always consult the specific Safety Data Sheet (SDS) for Chlorodiphenylmethane for complete hazard information, first-aid procedures (P301+P330+P331 for ingestion, P303+P361+P353 for skin, P305+P351+P338 for eyes, P304+P340+P310 for inhalation), and handling instructions .