Potassium Bromate Titration Solution
Overview
Potassium Bromate Titration Solution is a pre-standardized analytical reagent containing potassium bromate (KBrO3) in aqueous solution. It is widely used in redox titrations due to its strong oxidizing properties and precise equivalence point detection. Primarily employed in analytical laboratories, this solution serves as a primary standard for determining reducing agents like arsenic(III), hydrazine, and phenolic compounds. Its use is particularly prevalent in pharmaceutical QC, environmental testing, and industrial process control.
Physical and Chemical Properties
The solution typically appears colorless to faint yellow, with density varying slightly based on concentration (commonly 0.1N or 0.05N). As a strong oxidizer, it reacts quantitatively with reducing agents in acidic conditions, liberating bromine at the endpoint. Key chemical properties include its stability in pure form when properly stored, but it decomposes upon heating or prolonged exposure to light. The solution has excellent water solubility and exhibits predictable reaction stoichiometry, making it reliable for standardized analyses.
Main Applications
In pharmaceutical manufacturing, it's used for assay determination of active ingredients like isoniazid and phenothiazines. Food testing laboratories apply it for assessing antioxidant content, though its direct use in food is restricted in many countries. Environmental labs utilize this titrant for chemical oxygen demand (COD) testing and wastewater analysis. Industrial applications include quality control in chemical production and verification of reducing agents in electroplating baths.
Safety and Storage
As a Category 2 oxidizer, proper handling requires chemical-resistant gloves, eye protection, and fume hood use when preparing working solutions. Spills should be neutralized with sodium thiosulfate. Storage mandates amber glass containers with tight caps to prevent evaporation and photochemical decomposition. Shelf life typically reaches 6-12 months when stored below 25°C, though periodic re-standardization is recommended for critical applications.
B2B Procurement Guide
Industrial buyers should specify exact normality (±1%), standardization method (often against sodium thiosulfate), and packaging requirements (typically 1L or 2.5L amber glass bottles). Certificates of Analysis (CoA) must include batch-specific standardization data. For bulk procurement (50L+), verify supplier GMP compliance and request stability data. Lead times vary from 1-4 weeks depending on customization. Some regions require special permits for oxidizer transport.
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