DINP (diisononyl phthalate) assay

DINP (diisononyl phthalate) analysis is essential to ensure regulatory compliance for your packaging and plastic materials. DINP is a plasticizer in the phthalate family, widely used to soften PVC and other polymers. Because it can migrate into food and finished products, its presence is strictly regulated. At YesWeLab, we perform DINP analysis using GC-FID, GC-MS, and LC-MS after extraction, with a laboratory selection tailored to your specific matrix.

What is DINP and why measure it?

DINP (CAS number 28553-12-0 / 68515-48-0) is a high molecular weight phthalate used as a plasticizing agent in films, coatings, seals, and flexible materials. Like other phthalates, it is subject to regulatory monitoring due to health and environmental concerns. DINP analysis allows for:

• check compliance with the REACH regulation (Annex XVII) and with regulations on materials in contact with food (EU Regulation No. 10/2011);
• control toys and childcare articles, where the use of phthalates is restricted;
• secure your purchases and supplier specifications;
• to document a market launch dossier or to respond to a client audit.

A reliable and traceable result protects you from the risks of non-compliance, recall and damage to brand image.

Principle of the analysis: GC-MS and LC-MS

The analysis begins with the extraction of DINP from the matrix (using a solvent adapted to the type of material), followed by separation and quantification by gas chromatography-mass spectrometry (GC-MS) or liquid chromatography-mass spectrometry (LC-MS). GC-FID can be used for screening and quantification. The choice of technique depends on the matrix, the desired detection threshold, and the regulatory context. Our partner laboratories implement sensitive and selective methods capable of distinguishing DINP from other phthalates and plasticizers present.

Matrices analyzed

DINP testing is applicable to packaging, plastic films, food contact materials, as well as flexible PVC articles, coatings, and finished products. We adapt sample preparation to each type of material (rigid, flexible, multilayer) to obtain a representative quantification.

Further analyses of the catalogue

DINP testing is rarely performed in isolation; it is part of a comprehensive materials safety control approach. We recommend combining it with other services from our analytical catalog :

• Phthalate testing , for a complete family profile (DEHP, DBP, BBP, DINP, DIDP…);
• The dosage of plasticizers (DEHtP, DINCH, ATBC, DEHA…), alternatives and substitutes for phthalates;
• Global and specific migration tests , to assess the actual transfer to the food;
• The measurement of NIAS (unintentionally added substances);
• The determination of residual monomers in polymers;
• Theevaluation of the chemical inertness of a material in contact with food.

Find our dedicated offer on the materials conformity analysis and packaging analysis laboratory pages .

Why entrust your DINP dosage to YesWeLab?

At YesWeLab, we collaborate with a rigorously selected network of laboratories, most of which are certified and/or accredited (ISO 17025, COFRAC, etc.). These laboratories are chosen based on your specific needs, the matrices to be analyzed, and the required analytical techniques or methods.

If you have specific requirements—regulatory quantification threshold, standardized method, tight deadline—please specify them in your request: our scientific team will do everything possible to respond accurately and promptly. Since 2020, numerous manufacturers, distributors, and engineering firms have entrusted us with the management of their analyses, sending us their samples via our digital platform.

Request a quote for a DINP test

Do you need to monitor the DINP content or verify the REACH compliance of your packaging and materials? Add this analysis to your quote in just a few clicks or contact our scientific team for tailored support. We guarantee a laboratory suited to your matrix, a relevant GC-MS or LC-MS method, and results that can be directly used for your compliance documentation.