1 1 3 3-Tetramethylurea CAS 632-22-4

1. 1,1,3,3-Tetramethylurea is primarily used as a high-boiling, polar aprotic solvent in organic synthesis, capable of dissolving a wide range of organic and inorganic compounds, including aromatic compounds and Grignard reagents .
2. 1 1 3 3-Tetramethylurea CAS 632-22-4 serves as an effective reaction medium for polymerization reactions, such as the synthesis of aramids (e.g., Nomex®) from aromatic diacid chlorides and diamines, and acts as a base and proton acceptor in glycosylation reactions for carbohydrate chemistry .
3. Applications of 1,1,3,3-Tetramethylurea also include its use in biochemical research for protein studies and understanding hydration dynamics, and in material science for the synthesis of structured materials like mesoporous alumina .

1. Store 1,1,3,3-Tetramethylurea in a tightly sealed container in a cool, dry, and well-ventilated place, as it is hygroscopic and should be protected from moisture . Recommended storage is in sealed glass or polyethylene containers, away from direct sunlight and heat sources .
2. Keep 1,1,3,3-Tetramethylurea away from strong oxidizing agents, heat, sparks, and open flames. Avoid contact with water, moisture, and steam . Containers should be grounded and bonded during transfers .
3. Always 1 1 3 3-Tetramethylurea CAS 632-22-4 use appropriate personal protective equipment (PPE) including chemical-resistant gloves, tightly fitting safety goggles, and protective clothing. Use only with adequate ventilation or in a chemical fume hood, and avoid breathing vapors .

1. Immediately isolate the spill area, eliminate all ignition sources, and provide adequate ventilation. Use full personal protective equipment including self-contained breathing apparatus (SCBA). Do NOT let 1,1,3,3-Tetramethylurea enter drains or waterways .
2. Contain 1,1,3,3-Tetramethylurea using inert, non-combustible absorbent material (e.g., dry sand or earth). Carefully collect the contaminated material using spark-proof tools into a sealed, labeled chemical waste container for proper disposal according to hazardous material regulations .
3. Personnel 1 1 3 3-Tetramethylurea CAS 632-22-4 must wear suitable PPE during cleanup. Under fire conditions, use water spray to cool fire-exposed containers; extinguish with dry chemical, carbon dioxide, or foam, but do NOT get water inside containers as it may cause violent reactions .

1. 1,1,3,3-Tetramethylurea is classified with GHS signal word "Danger". It is harmful if swallowed (H302), may damage the unborn child (H360D), and is a combustible liquid (H227) with a flash point of 75°C .
2. 1,1,3,3-Tetramethylurea causes skin irritation (H315) and serious eye irritation (H319), and may cause respiratory irritation (H335). 1 1 3 3-Tetramethylurea CAS 632-22-4 has a boiling point of 175-178°C, melting point of -1°C, and is completely miscible with water and most organic solvents .
3. Thermal decomposition produces toxic and irritating fumes including nitrogen oxides, carbon monoxide, and carbon dioxide . Always consult the specific Safety Data Sheet (SDS) for 1,1,3,3-Tetramethylurea for complete hazard information, first-aid procedures (P301+P312+P330 for ingestion, P305+P351+P338 for eyes, P304+P340 for inhalation), and handling instructions. Precautionary statements include P202 (do not handle until all safety precautions read and understood), P280 (wear protective gloves/eye protection), and P308+P313 (if exposed or concerned, get medical advice) .