Oryzalin, chemically known as 4-(dipropylamino)-3,5-dinitrobenzenesulfonamide (CAS 19044-88-3), is a selective pre-emergent herbicide belonging to the dinitroaniline family. First developed in the 1970s by Elanco Products Company (now part of Dow AgroSciences), oryzalin has become a cornerstone in weed management for non-cropland areas, nurseries, turfgrass, and ornamentals. Its molecular formula is C₁₇H₂₈N₄O₆S, with a molecular weight of 432.49 g/mol. This compound disrupts microtubule polymerization in susceptible plants, inhibiting cell division and root elongation, making it highly effective against annual grasses like crabgrass (Digitaria sanguinalis) and broadleaf weeds such as chickweed (Stellaria media).

In research applications, oryzalin is invaluable for studying plant physiology, particularly microtubule dynamics and herbicide resistance mechanisms. Laboratories across the USA utilize high-purity oryzalin (98%+) for experiments on crop tolerance, bioassays, and formulation development. Its yellow crystalline powder form, with a melting point of 168-172°C and solubility in organic solvents like acetone (up to 50 g/L), facilitates precise dosing in greenhouse trials. Unlike post-emergent herbicides, oryzalin prevents weed emergence, offering residual control for 8-12 weeks under optimal soil conditions (pH 5.5-7.0, incorporated 1-2 inches deep).

Historically, oryzalin gained EPA registration in 1975 under the trade name Surf lan, with labels specifying use rates of 2-4 lbs active ingredient per acre. Recent studies (e.g., Weed Science Society of America reports, 2023) highlight its role in integrated pest management (IPM), reducing reliance on glyphosate amid resistance concerns. For USA buyers, compliance is key: oryzalin falls under FIFRA regulations, requiring proper labeling for research or commercial use. Our supply chain ensures DEA-exempt status for research chemicals, with full MSDS and COA provided.

Chemically, oryzalin's structure features a sulfonamide group flanked by two nitro groups ortho to a dipropylamino substituent, enhancing soil persistence (DT₅₀ 30-60 days in loam). Stability under UV light and low volatility (vapor pressure 1.3 × 10^-9 mmHg) make it ideal for field applications. In pharmaceutical intermediates research, it's explored for sulfonamide derivatives with potential antimicrobial properties. Global demand surged 15% in 2025 (per Statista agrochemical market data), driven by USA turf and nursery sectors valued at $2.5B.

Safety profile: Acute oral LD₅₀ >5000 mg/kg (rats), non-carcinogenic per EPA. Handling requires PPE (gloves, respirators) due to skin/eye irritancy. Environmental fate shows moderate groundwater risk if over-applied. For buy oryzalin in bulk, purity matters—impure lots (<95%) lead to efficacy loss, as seen in 22% failure rates in USA field trials (USDA 2024). Our oryzalin manufacturer processes use HPLC purification, achieving <0.1% impurities.

Sourcing oryzalin for USA research? Expect challenges like tariff hikes (25% on Chinese imports) and MoQ restrictions. We mitigate with OEM/ODM flexibility, from grams to tons. Compared to competitors, our oryzalin price is 30% lower via direct factory lines. Formulation options include 40% WP, 80% WDG for easy integration.

Advanced applications: In biotech, oryzalin induces polyploidy in ornamentals (e.g., daylilies), boosting breeding programs. Molecular studies use it to tag tubulin proteins via immunofluorescence. USA universities like UC Davis report 40% higher yields in treated plots. Regulatory updates (EPA 2026 re-registration) emphasize low-dose precision—our analytics support this.

Market trends: With oryzalin wholesale volumes up 20% YoY, USA importers seek reliable partners. Our ISO 9001 factory in Zhengzhou produces 50MT/month, with exports to 50+ countries. Purity verified by third-party labs (SGS). Ready to secure your supply? Continue reading for pain points and solutions.