Hydrogen Peroxide Labelling
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Hydrogen Peroxide labelling reflects the fact that Hydrogen Peroxide is a hazardous material and therefore is subject to the new CLP Regulation 1272/2008; CLP means Classification, Labelling and Packaging. These new rules apply from the 1st December 2010 for pure substances and 1st June 2015 for mixtures including aqueous dilutions of Hydrogen Peroxide. There are set concentration limits for Hydrogen Peroxide which determines the classification and labelling details. CLP differs from the CHiP Regulations as it introduces a completely new format of labelling with totally different symbols and text.
Under CHiP which applies until 1st December 2010 and 1st June 2015 respectively for substances and mixtures, labelling involves use of an orange box with a black symbol to depict the hazard. This is accompanied by a series of R:Phrases (Risk) and S:Phrases (Safety) as text to inform the user of the material of any hazards. CLP will remove these symbols and phrases to replace them with hazard pictograms which take the form of white diamonds (a square set on its point) with a red border. The R and S phrases are replaced with Hazard and Precautionary Statements, also when applicable a Signal Word is used which states either Danger or Warning depending upon the concentration and hazards of the substance or mixture. These rules will apply to aqueous mixtures of hydrogen peroxide.
As with all substances and mixtures, the labelling of Hydrogen Peroxide is determined by its concentration. The CHiP Regulation specifies that Hydrogen Peroxide labelling should be as follows, assuming an aqueous solution with no other hazardous substances involved:
Concentrations equal to or above 8% are classified as R22, Harmful if swallowed.
Concentrations equal to or above 50% are classified as R20, Harmful by inhalation.
Concentrations at 50% and less than 70% are classified as R34, Corrosive, Causes burns.
Concentrations equal to or above 70% are classified as R35, Corrosive, Causes severe burns.
Hydrogen Peroxide is classified as Irritant at the following concentrations:
Between 35 and 50%, R37/38, Irritating to respiratory system and skin.
Between 8 and 50%, R41, Risk of serious damage to eyes.
Between 5 and 8%, R36, Irritating to eyes.
Additional risk phrases are added, above 50% R8: Contact with combustible material applies and the symbol ‘O’ appears on the label in flames representing an oxidising material. R5: Heating may cause an explosion appears on the Hydrogen Peroxide label above 70%.
When the new CLP labels are used for Hydrogen Peroxide labelling, the marking will appear entirely different for Hydrogen Peroxide even though similar concentration ranges are applied to the material. As previous assume an aqueous solution with no other hazardous substances involved.
Between 5 and 8% the liquid is classified as Serious Eye Irritant Hazard Category 2 with the Hazard Statement H319; Causes serious eye irritation.
Between 8 and 50%, Serious Eye Damage Hazard Category 1, H318; Causes serious eye damage.
Between 35 and 50%, Skin Irritant Hazard Category 2, H315; Causes skin irritation.
50 to 70% is classified as Skin Corrosion Hazard Category 1B, H314; Causes severe burns and eye damage.
Solutions above 70% are H314 but classified as Skin Corrosion Hazard Category 1A .
An additional phrase is added for concentrations at or above 35%, H335: May cause respiratory irritation. The category is STOT SE 3 which means Specific Target Organ Toxicity – Single exposure, Hazard Category 3, Respiratory Tract Irritation.
It is important that only one set of rules applies when labelling Hydrogen Peroxide solutions as both are not allowed nor is a combination of both. The size of the new pictograms under CLP has to occupy 1/15th of the total label area for each one used compared to a minimum of 10% for CHiP regulations. When applying either set of rules to labelling Hydrogen Peroxide only 6 safety phrases or precautionary statements must be added unless more are definitely needed to information purposes.
For further information on Hydrogen Peroxide hazards. Hydrogen Peroxide uses and transporting Hydrogen Peroxide, please refer to the relevant pages of this website.
http://www.hydrogen-peroxide.co.uk/hydrogen-peroxide-labelling | Saved Friday, November 18th, 2011 - 5:39 AM