Adjuvants are authorised under European legislation Regulation (EC) No 1107/2009, which came into force on 14 June 2011.
Under Article 2 Scope (3d) of 1107/2009 an adjuvant is defined as:
‘substances or preparations which consist of co-formulants or preparations containing one or more co-formulants, in the form in which they are supplied to the user and placed on the market to be mixed by the user with a plant protection product and which enhance its effectiveness or other pesticidal properties, referred to as ‘adjuvants’.
Products of the following types are considered by HSE to fall within this definition of an adjuvant:
HSE does not currently regulate other types of spray additives, such as dyes, markers, carriers, anti-transpirants or anti-foaming agents.
A company wishing to market an adjuvant for use with a plant protection product in the UK must apply for its inclusion on the 'Official List of Adjuvants'.
The 'Official List' provides details of the adjuvant products that may be used with plant protection products and the conditions of use to which they are subject.
Each Officially Listed adjuvant product is issued an individual 'List Entry' which specifies the identity of the adjuvant and the conditions that a user will need to comply with. At any point in time there will be only one extant List Entry for each adjuvant product.
The Official List is published in full on the HSE website adjuvant database, any additions and amendments are updated regularly on the website (link to Adjuvant database on HSE Website).
Our legal controls on adjuvants are limited to controlling the use of adjuvants with plant protection products.
Unlike with plant protection products, we do not have controls on advertisement, sale, supply or storage of adjuvants, although other legislation will apply in these areas.
You must submit an application (see further information in guidance document) containing information demonstrating the safety of the adjuvant for the proposed uses.
An Effective Adjuvant Component (EAC) is the main active component of an adjuvant.
You must provide appropriate data or information on:
Where an EAC has been previously considered in an Officially Listed adjuvant and where you have access to the data used to support that Official Listing, you may be able to reference the previously submitted data rather than submit new data (see below). You will need to ensure that you explain why the data you are referencing are relevant to your application.
You may address the data requirements by:
All studies must be:
We have no legal control over the marketing and advertisement of adjuvant products. It is your responsibility to ensure that any product literature is in accordance with both the conditions of use of the adjuvant as specified in the List Entry and the pesticide authorisation. A product can be removed from the Official List if the marketed label or other literature does not comply with conditions in the List Entry or the relevant plant protection product authorisation(s).
Guidance on the labelling of pesticide products is given in The Labelling Handbook. You may wish to use this guidance to help you produce a draft label for your adjuvant product.
Adjuvants are subject to the Regulation on Classification, Labelling and Packaging (CLP) of Substances and Mixtures (EC) No. 1272/2008. Advice on labelling with regard to CLP is available on the HSE's website. You should provide details of proposed classification and labelling when you submit your application.
General information on where to submit applications, processing times and information set out during evaluations is in the Applicant Guide.
Adjuvant applications are placed in our usual processing streams (see the guidance document on application streams for further information).
Applications for an adjuvant product with a new EAC which has not previously been included on the Official List will usually be considered via the zonal lead (52 week) stream, as will applications for a new source of EAC, or ones with supporting residues data.
Some applications require no technical input, and can be considered via the Admin stream.
Adjuvant applications are free of charge.
If your application is successful, we will inform you in the normal way (see The Applicant Guide for further information).
An electronic copy of the List Entry will be included on the Adjuvant Database and new products will be added to the Official List of adjuvants. For any changes to existing products, the List Entries will be amended appropriately.
If your application involved a major change to the product's identity, we will produce a List Entry for both the 'new' product and the 'old' product. There will normally be aa use-up period for 'old' products.
If your application is unsuccessful we will explain the reasons why your application has been refused and specifying what data requirements you need to address if you wish to make a further attempt to obtain inclusion on the Official List of Adjuvants of a product or new use of an existing product. You can obtain a copy of the full Official List from us- see Contact Details page, or you can consult the Adjuvants Database on this website for information on those in the List.
Upon issue of the first Official List Entry for your adjuvant product, your adjuvant will be assigned a unique adjuvant registration number, prefixed by 'ADJ'. The number allocated will always remain with your adjuvant product, unless you subsequently make a major change to its identity or to its formulation.
See the guidance document on registration numbers for details of when we may need to issue or change an 'ADJ' number.
We carry out regular checks to ensure that List Entries are up-to-date.
If revocation action is taken against a pesticide or its uses which will affect your List Entry, we will amend your Entry.
If you wish to withdraw a product or use for the the Official List, please follow the guidance on commercial withdrawals.