Diphenylamine

High-Purity Diphenylamine Reference Materials for Precise Residue Analysis

Ensure compliance with regulatory limits using our high-purity Diphenylamine reference materials. HPC Standards GmbH offers top-quality analytical standards, essential for accurate residue analysis in food and environmental samples. Our products meet international quality requirements, providing reliable results for laboratories worldwide.

Product	Catalog No./ CAS No.	Quantity	Price
D10-Diphenylamine	681125 37055-51-9	1X10MG	Please log in.
D10-Diphenylamine solution Concentration: 100 µg/ml Solvent: Ethyl acetate	681127 37055-51-9	1X1ML	Please log in.
ISO 17034 Reference Material Diphenylamine	672845 122-39-4	1X250MG	Please log in.
Diphenylamine solution Concentration: 100 µg/ml Solvent: Acetonitrile	678394 122-39-4	1X1ML	Please log in.
Diphenylamine solution Concentration: 100 µg/ml Solvent: Acetonitrile	688918 122-39-4	1X5ML	Please log in.
ISO 17034 Certified Reference Material Diphenylamine	692069 122-39-4	1X100MG	Please log in.

High-purity reference materials for accurate residue analysis in food and environmental samples.

Overview

Diphenylamine (DPA) is an organic compound with the formula (C₆H₅)₂NH. It is a derivative of aniline, consisting of an amine bound to two phenyl groups. The compound is a colorless solid, but commercial samples are often yellow due to oxidized impurities. Diphenylamine dissolves well in many common organic solvents and is moderately soluble in water.

Uses

Diphenylamine is widely used for its antioxidant properties. It is employed in various industries, including agriculture as a fungicide and antihelmintic, and in the manufacture of smokeless powder as a stabilizer. It is also used as a pre- or postharvest scald inhibitor for apples, protecting the skin from oxidation products during storage. Additionally, diphenylamine functions as an antioxidant in lubricants and as a redox indicator in alkaline redox titrations.

Regulatory

The European Commission (EC) and the U.S. Environmental Protection Agency (EPA) have established maximum residue levels for diphenylamine in food products. The EC set these levels in 2005, and the U.S. EPA has a tolerance level for apples at 10 ppm. The World Health Organization (WHO) and the Food and Agriculture Organization (FAO) have established an acceptable daily intake of 0.02 mg/kg/day.

Monitoring

Monitoring diphenylamine residues is crucial for ensuring compliance with regulatory limits. Laboratories conducting food and environmental analysis rely on high-purity reference materials to achieve accurate and reliable results. These reference materials are essential for detecting and quantifying diphenylamine residues in various samples.

Health Impact

Diphenylamine can cause severe irritation to the eyes and is harmful if swallowed or inhaled. It targets the red blood cell system and can cause abnormal erythropoiesis in the spleen, leading to congestion and haemosiderosis. Long-term exposure can result in changes in the liver and kidneys. At toxic doses, reproductive effects include reduced implantation sites and litter size in animals, indicating potential mutagenic or teratogenic effects.

Environmental Impact

Diphenylamine is very toxic to aquatic organisms and poses a risk to biological methods of sewage treatment. It exhibits very low persistence in direct water photolysis experiments and is moderately volatile. Despite limited data, the environmental risk is characterized as negligible due to its intended indoor use.

Safety Measure

Handling diphenylamine requires strict safety measures due to its toxic and irritant properties. Personal protective equipment (PPE) such as gloves, goggles, and respiratory protection should be used. Proper ventilation and adherence to occupational safety guidelines are essential to minimize exposure risks.

Analytical Standards

HPC Standards GmbH provides high-purity reference materials for diphenylamine, ensuring accurate and reliable residue analysis. Our products are tested according to international quality requirements and meet the highest industrial standards. These reference materials are essential for laboratories conducting food and environmental analysis to ensure compliance with regulatory limits.