Description

Hydrothol 191 is a specialized aquatic herbicide and algicide, primarily composed of the active ingredient endothall as the mono(N,N-dimethylalkylamine) salt. This formulation is engineered for effective, targeted control of submerged and floating aquatic vegetation in a variety of managed water bodies. It is a critical tool for industries and municipalities requiring reliable vegetation management to ensure operational efficiency, water flow, and ecosystem balance. Key users include professionals in aquaculture, irrigation, industrial water systems, and lake and pond management.

Application

• Aquatic Vegetation Control: Management of submerged weeds such as hydrilla, milfoil, pondweeds, and coontail in lakes, reservoirs, and ponds.
• Irrigation and Drainage Systems: Clearing canals, ditches, and irrigation channels to maintain unobstructed water flow for agricultural and industrial use.
• Aquaculture Operations: Controlling algae and weed growth in fish and shrimp farms to improve water quality and stock health.
• Industrial Water Cooling Systems: Preventing biofouling and blockages in intake pipes and cooling towers.
• Recreational Water Body Management: Maintaining swimming areas, marinas, and waterfront properties by controlling nuisance aquatic plants.
• Flood Control and Hydropower: Vegetation management in floodways and around hydroelectric facilities to ensure structural integrity and operational capacity.

Basic Information

Product Name	Hydrothol 191
CAS No.	66330-88-9
Molecular Formula	C8H10O5 • CnH2n+1N(CH3)2 (n=12-14)
Molecular Weight	Contact for details
Synonyms	Endothall, mono(N,N-dimethylalkylamine) salt; Endothall amine salt; 7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid, mono(N,N-dimethylalkylamine) salt; Aquathol; Aquathol K (related potassium salt); Herbicide 191; Hydrothol; Accelerate (various trade names).
EINECS	Contact for details

Quality Control

Our Hydrothol 191 is manufactured under strict quality protocols to ensure batch-to-batch consistency and efficacy. Production adheres to relevant Good Manufacturing Practices (GMP). Each batch is analyzed to confirm the identity and concentration of the active ingredient and to control key impurities. A comprehensive Certificate of Analysis (COA) detailing assay results, physical properties, and other critical parameters is provided with every shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed, original container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Keep away from heat, open flames, and incompatible materials. Ensure the storage area is clearly labeled and access is restricted to authorized personnel only.

Specification

Item	Specification
Appearance	Amber to brown liquid
Identification (IR)	Conforms
Assay (Endothall acid equivalent)	≥ 50.0%
Specific Gravity (20°C)	1.10 - 1.15
pH (as is)	7.0 - 9.5

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.