Sodium hydroxide

GHS

General Information

Implementation:

EU

Remarks:

Sodium hydroxide is listed on Annex VI of Regulation (EC) No 1272/2008 (CLP). The harmonized classification and labelling according to this CLP regulation is given in this section. However, in addition it is proposed to classify the substance as: Corrosive to metals; category 1.
The Precautionary Statements mentioned in section 2.1 are applicable for industrial use of the substance NaOH. Other or additional Precautionary Statements may be more appropriate for professional and/or consumer use of NaOH.

Related composition

Related composition:

Sodium hydroxide

Classification

Physical hazards

Explosives

Reason for no classification:

data conclusive but not sufficient for classification

Flammable gases and chemically unstable gases

Reason for no classification:

data conclusive but not sufficient for classification

Aerosols

Reason for no classification:

data conclusive but not sufficient for classification

Reason for no classification:

hazard class not assessed

Oxidising gases

Reason for no classification:

data conclusive but not sufficient for classification

Gases under pressure

Reason for no classification:

data conclusive but not sufficient for classification

Flammable liquids

Reason for no classification:

data conclusive but not sufficient for classification

Flammable solids

Reason for no classification:

data conclusive but not sufficient for classification

Self-reactive substances and mixtures

Reason for no classification:

data conclusive but not sufficient for classification

Pyrophoric liquids

Reason for no classification:

data conclusive but not sufficient for classification

Pyrophoric solids

Reason for no classification:

data conclusive but not sufficient for classification

Self-heating substances and mixtures

Reason for no classification:

data conclusive but not sufficient for classification

Substances and mixtures which in contact with water emit flammable gases

Reason for no classification:

data conclusive but not sufficient for classification

Oxidising liquids

Reason for no classification:

data conclusive but not sufficient for classification

Oxidising solids

Reason for no classification:

data conclusive but not sufficient for classification

Organic peroxides

Reason for no classification:

data conclusive but not sufficient for classification

Corrosive to metals

Hazard category:

Met. Corr. 1

Hazard statement:

H290: May be corrosive to metals.

Desensitized explosives

Reason for no classification:

data lacking

Health hazards

Acute toxicity - oral

Reason for no classification:

data conclusive but not sufficient for classification

Acute toxicity - dermal

Reason for no classification:

data conclusive but not sufficient for classification

Acute toxicity - inhalation

Reason for no classification:

data conclusive but not sufficient for classification

Skin corrosion / irritation

Hazard category:

Skin Corr. 1A

Hazard statement:

H314: Causes severe skin burns and eye damage.

Serious eye damage / eye irritation

Hazard category:

Eye Damage 1

Hazard statement:

H318: Causes serious eye damage.

Respiratory sensitisation

Reason for no classification:

data conclusive but not sufficient for classification

Skin sensitisation

Reason for no classification:

data conclusive but not sufficient for classification

Aspiration hazard

Reason for no classification:

data conclusive but not sufficient for classification

Reproductive toxicity

Reason for no classification:

data conclusive but not sufficient for classification

Effects on or via lactation

Reason for no classification:

data conclusive but not sufficient for classification

Germ cell mutagenicity

Reason for no classification:

data conclusive but not sufficient for classification

Carcinogenicity

Reason for no classification:

data conclusive but not sufficient for classification

1. Specific target organ toxicity - single (STOT-SE)

Reason for no classification:

data conclusive but not sufficient for classification

1. Specific target organ toxicity - repeated (STOT-RE)

Reason for no classification:

data conclusive but not sufficient for classification

Specific concetration limits

1.

Concentration range (%):

>= 5

Hazard categories:

Skin Corr. 1A

2.

Concentration range (%):

>= 2 - < 5

Hazard categories:

Skin Corr. 1B

3.

Concentration range (%):

>= 0.5 - < 2

Hazard categories:

Skin Irrit. 2

4.

Concentration range (%):

>= 0.5 - < 2

Hazard categories:

Eye Irrit. 2

Environmental hazards

Hazardous to the aquatic environment (acute / short-term)

Reason for no classification:

data conclusive but not sufficient for classification

Hazardous to the aquatic environment (long-term)

Reason for no classification:

data conclusive but not sufficient for classification

Hazardous to the ozone layer

Reason for no classification:

data conclusive but not sufficient for classification

Labelling

Signal word:

Danger

Hazard pictogram

GHS05: corrosion

Hazard statements

H290: May be corrosive to metals.

H314: Causes severe skin burns and eye damage.

For concentration of NaOH: >=5% and concentration range of NaOH: >=2% - < 5%

H315: Causes skin irritation.

For concentration range of NaOH: >=0.5 %- <2%

H319: Causes serious eye irritation.

For concentration range of NaOH: >=0.5%-<2%

Precautionary statements

P260: Do not breathe dust/fume/gas/mist/vapours/spray.

P280: Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...

P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].

P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P310: Immediately call a POISON CENTER/doctor/…