What does P404 mean?

What kind of precautionary statement is P404?

Storage statements (P4xx) set the conditions for keeping the product safely: locked up, in a cool, well-ventilated place or in the original container, protected from sunlight. Warehouse layout and container choice follow from these statements.

Which hazards is it used for?

In the CLP Annex IV assignment table used by Chemoris, P404 is not linked directly to a class; it is used as part of a combined statement or at the supplier's choice.

Combined statements containing this code

• P402+P404

Neighbouring statements of the same kind

The statements closest in number to P404 in the storage group:

• P401Store in accordance with… .
• P402Store in a dry place.
• P403Store in a well-ventilated place.
• P405Store locked up.
• P406Store in a corrosion-resistant/… container with a resistant inner liner.
• P407Maintain air gap between stacks or pallets.

How is P404 read?

This statement is a 5-word text. The text is a single instruction without options and is written as it appears in Annex IV.

Where is P404 written in the SDS?

If P404 is on the list of precautionary statements in Section 2.2, it is printed with its code and the text "Store in a closed container.". The statement should also agree with the safe storage conditions in Section 7.2.

How does P404 appear on the label?

P404 shows up on a label only if it is selected: the candidates from Annex IV are reduced to at most 6 under Article 28(3). In the Chemoris selection method, storage statements are considered in position 3. If the core statements exceed 6, Article 28(3) allows up to 8; when a combined statement is chosen, its individual parts are not repeated on the label. As P404 is on the list of precautionary statements of Annex IV, it can be used in current labels and SDSs; Chemoris writes it into the document only when the relevant storage candidate is selected.

Which classes and which priority is P404 assigned to?

Related assignment entries: 1 class/category entries, 1 different H statements. Priority split: core (priority 1) in 1 entries. Of these entries, 0 carry the signal word “Danger”, 0 carry “Warning” and 1 need no signal word.

The class families it appears in most often: Water-react. * (1).

Classes that P404 is assigned to

P404 is not assigned to a class on its own; the combined statements it belongs to (P402+P404) are assigned to these classes:

Where does P404 stand in the storage group?

P404 is number 4 of the 19 statements in the P4xx group. The group holds 6 combined and 2 withdrawn statements and 12 single valid statements. Combined statements merge several situations on one line; withdrawn statements are replaced by their current equivalents.

Which SDS section does P404 feed?

Because of its number and its storage kind, P404 relates to Section 7 Handling and storage of the SDS; in Section 2.2 it is written with its code and text. Statements in the same number range feed the same section.

Checklist when writing P404

• P404 is a part of the combined statements P402+P404; when a combined statement is selected, P404 is not repeated on the label.
• P404 should agree with Section 7; in Section 2.2 it is written with its code and text.
• The text is 5 words long; if the label space is narrow, choosing a combined statement can save room.

Official EU wording of P404 in other languages

When a product is exported to the EU, the SDS and label are expected in the official language of the Member State where it is placed on the market (REACH Article 31(5)). The table gives the official wording of P404 from the CLP Annex III/IV language versions published in the Official Journal of the European Union. Source: EUR-Lex CELEX 02008R1272-20260701.

Next steps

To read a statement like P404 correctly on a label and in an SDS, see the guide How to read H and P codes; to pick the class and prepare the label automatically, use the free label tool.

Where does it appear in the safety data sheet?

Precautionary statements are given with their code and full text in Section 2.2 (label elements) of the safety data sheet. Alternatives separated by a slash or in square brackets (e.g. gloves/protective clothing) are narrowed down to suit the product.

Frequently asked questions