Quinmerac CAS 90717-03-6

1. Quinmerac CAS 90717-03-6 is primarily used as a selective auxin herbicide for pre- and post-emergence control of broad-leaved weeds in crops such as cereals, oilseed rape, and sugar beets .
2. Quinmerac exhibits high activity against problem weeds including *Galium aparine* (cleavers), *Veronica* spp., and *Lamium* spp., and is often formulated in mixtures with chloridazon or metazachlor for broad-spectrum weed control .
3. Quinmerac functions through an auxin-type mode of action, where it stimulates ethylene production in susceptible plants by increasing 1-aminocyclopropane-1-carboxylic acid (ACC) synthase activity, which in turn triggers abscisic acid (ABA) accumulation and subsequent growth inhibition .
4. Researchers utilize Quinmerac in plant physiology studies to investigate hormone-mediated growth inhibition, where treated plants exhibit symptoms including root growth inhibition, shoot stunting, leaf epinasty, and reduced water consumption due to ABA-mediated stomatal closure .

1. Quinmerac CAS 90717-03-6 must be stored in a tightly sealed container in a cool, dry, and well-ventilated environment, protected from light and moisture, with storage at room temperature (15-25°C) in sealed, dry conditions recommended .
2. Quinmerac is classified with hazard statements H315 (causes skin irritation), H317 (may cause allergic skin reaction), and H319 (causes serious eye irritation), with an NFPA health rating of 1-2 depending on exposure .
3. Personnel must wear chemical-resistant gloves, safety goggles with side-shields, and protective clothing when handling quinmerac, ensuring adequate ventilation in work areas (preferably a chemical fume hood) .
4. Avoid formation of dust and aerosols, prevent contact with skin, eyes, and clothing, wash thoroughly after handling, and follow precautionary statements P280 (wear protective gloves/eye protection) and P305+P351+P338 (IF IN EYES: rinse cautiously with water) .

1. Isolate the spill area, ensure adequate ventilation, and avoid dust formation when quinmerac is released, wearing full personal protective equipment including chemical-resistant gloves, safety goggles, and suitable respirator if necessary .
2. Collect Quinmerac by sweeping or vacuuming without creating dust, or soak up with inert absorbent materials (diatomite, universal binders) using non-sparking tools, and place into suitable closed containers for disposal .
3. Avoid creating dust clouds during cleanup to prevent respiratory exposure, and prevent the product from entering drains or water courses due to potential environmental hazards .
4. Dispose of collected material according to local, state, and federal environmental regulations, as the substance may have environmental hazards requiring proper waste management through licensed chemical destruction or controlled incineration .

1. Quinmerac CAS 90717-03-6 is not classified as highly flammable in its solid form (NFPA fire rating of 1) but may decompose under fire conditions, with a melting point of approximately 244°C and may emit toxic fumes when involved in a fire .
2. Use Quinmerac dry chemical powder, carbon dioxide, alcohol-resistant foam, or water spray to extinguish fires involving the product, selecting appropriate extinguishing media based on surrounding environment .
3. Firefighters should wear self-contained breathing apparatus and full protective gear when handling burning quinmerac due to hazardous decomposition gases including carbon monoxide, carbon dioxide, nitrogen oxides (NOx), and hydrogen chloride .
4. During combustion, may emit irritant and toxic fumes; move containers from the fire area if safe to do so, cool exposed containers with water spray, and contain fire runoff to prevent environmental contamination .