What does H410 mean?

Categories and label elements

CLP abbreviation	Pictogram	Signal word
Aquatic Chronic 1	GHS09Environment	Warning

Related precautionary statements (P codes)

The precautionary statements that CLP Annex IV assigns to this class. Not all of them go on the label: under CLP Article 28(3), no more than six precautionary statements appear on the label unless the nature and severity of the hazard require more; the selection depends on the product and its users.

When does a mixture need H410?

For a pure substance H410 comes straight from the classification; for a mixture it is derived from component data. The calculation rules applied to this code are:

• A component of this class is taken into account in a mixture only at a concentration of ≥ 0.1 % (with an M-factor the limit becomes 0.1/M %). (CLP Annex I Table 1.1; 4.1.3.1)
• Summation method: the weighted sum of the qualifying components must reach ≥ 25 % for the mixture to be classified Aquatic Chronic 1 (H410). (CLP Annex I Table 4.1.2)
• If a component has a harmonised specific concentration limit (SCL) and meets it, the mixture takes the corresponding class directly.

For a step-by-step worked example see classifying a mixture under CLP.

Where is H410 written in the SDS?

In the prepared SDS the class "Aquatic Chronic 1" is matched with the code in Section 2.1, the text of H410 is written in Section 2.2 next to the pictogram and signal word, and the class of the component shows up in Section 3. Section 16 collects the full text of the H statements cited by code. For H410, it is justified in Section 12 (ecological information) under the relevant effect heading.

How does H410 appear on the label?

When you see H410 on a label it is accompanied by GHS09 (environment), and it is written with the signal word "Warning". In the Chemoris template Section 2.2 carries at most 8 H statements; if the limit is exceeded the least severe ones are dropped and a warning is shown. For the bottom of the label, 3 P statements are candidates for this class in CLP Annex IV; under CLP Article 28 at most 6 of them are selected.

Where does it appear in the safety data sheet?

• Section 2.1: classification; the class abbreviation and H410 are given together.
• Section 2.2: label elements; H410 with its full text, pictogram and signal word.
• Section 3: composition table; in the row of every component that has this class.
• Section 16: the full text of the H statements cited as codes in earlier sections.

Class criteria and thresholds for H410

The values below come from the Chemoris rule file (CLP Annex I). They show the condition under which H410 arises in a mixture. For physical hazards and other classes that depend on test data, the result comes from the mixture's own measurement, not from component percentages.

H410 compared with H411 and H412

The table below puts H410 next to its closest neighbouring statements; the values are read from the rule data.

The signal word differs: Warning for H410, — for H411. Both are shown with the same pictogram (GHS09). The signal word differs: Warning for H410, — for H412. The pictogram differs: GHS09 for H410, none for H412.

H411 H412

In which SDS sections does H410 appear?

H410 does not stay only in the label section of an SDS; the class itself and the precautionary statements assigned to it shape the content of other sections too. The counts are calculated from the P statements that Annex IV assigns to this class.

Statements that appear on the label together with H410

H410 is never printed alone on a label; it sits next to the pictogram and the signal word. The Chemoris selection method (response, prevention, storage, disposal in that order; core statements first) gives these first 3 candidates for this class:

The GHS09 pictogram and “Warning” are printed together. This ranking applies because a label usually carries at most 6 statements; when a combined statement is selected, its parts are not printed again.

Official EU wording of H410 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 H410 from the CLP Annex III/IV language versions published in the Official Journal of the European Union. Source: EUR-Lex CELEX 02008R1272-20260701.

Common mistakes with H410

• Mixing up signal words: if any class requires “Danger”, only “Danger” is printed and “Warning” drops out (CLP Article 20(3)).
• Writing unlimited H statements for a multi-class product: in the Chemoris template, Section 2.2 holds at most 8 H statements.

Next steps

To read a statement like H410 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.

Related hazard statements

Other H statements in the same hazard family as H410 (Aquatic Chronic). The difference between categories mostly comes from the degree of severity.

• H411Toxic to aquatic life with long lasting effects.
• H412Harmful to aquatic life with long lasting effects.
• H413May cause long lasting harmful effects to aquatic life.

Frequently asked questions