Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and sales of fine chemicals. Headquartered in Jinan, Shandong, China, we are committed to delivering high-quality products to our global partners. Currently, over 90% of our products are exported to developed markets, including North America, Europe, Japan, South Korea, and the Middle East.
Product Description
Monolinuron (CAS: 1746-81-2), also known as 3-(p-Chlorophenyl)-1-methoxy-1-methyl urea, is a white to light yellow crystalline solid. It is a phenylurea herbicide, widely used for pre- and post-emergence control of broadleaf weeds and annual grasses in various crops, and also as a reference standard for pesticide residue analysis.
Molecular Formula & Structure
Molecular Formula: C?H??ClN?O?; Molecular Weight: ~214.65; IUPAC Name: N′-(4-chlorophenyl)-N-methoxy-N-methylurea.
Physical & Chemical Properties
- Appearance: White to light yellow or light orange crystalline solid or powder, odorless
- Key Properties: Melting Point ~81.5 °C; Density ~1.3575 g/cm3 (estimate); Flash Point 100 °C; Water Solubility ~0.58 g/L (room temperature).
- Chemical Traits: Stable under normal temperature and pressure; soluble in ethanol and acetone, practically insoluble in water; avoid contact with strong oxidants, acids and alkalis; decomposes when heated to release toxic fumes.
- Toxicity: Harmful if ingested, inhaled or absorbed through skin; has teratogenic effects and impacts the reproductive system; highly toxic to aquatic organisms; GHS signal word "Warning".
Synthesis & Storage
- Synthesis: Prepared by the reaction of p-chlorophenyl isocyanate with N-methoxymethylamine, followed by purification and crystallization to obtain the target product.
- Storage: Sealed in airtight containers; stored in a cool, dry and well-ventilated place at room temperature; avoid sunlight, high temperature and moisture; separate from oxidants, acids and alkalis; refrigerated transportation is recommended if necessary.
- Safety: Operate in a well-ventilated environment with local exhaust; wear protective gear; avoid dust inhalation and skin/eye contact; clean up spills promptly; dispose in accordance with regulations; hazardous transport number UN 3077 9/PG 3.
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