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Alcoholic picric acid 3 % (picral)

Alcoholic picric acid 3% (picral) is a chemical solution mainly used in metallography and scientific laboratories. It is an alcoholic solution of picric acid (C.I.: 10305) (CAS No.: 88-89-1). In metallography, it is used as a microetching agent for pure iron, carbon steels, low-alloy steels, gray cast iron and Sn-coated steels and cast irons. Because of the chemical reactions that take place between the picric acid and the metals, the solution enables the development of structural information in these materials.

Ethanol (C2H5OH) is an organic solvent that acts as a carrier for picric acid in this solution. Picric acid, also known as 2,4,6-trinitrophenol (C6H2(NO2)3OH), is a high-value substance available in various concentrations. The combination of ethanol and picric acid creates a solution that is used in metallography due to its chemical properties and reactions.

Alcoholic picric acid improves the surface quality of the materials under study and clearly exposes structural details. Microstructural development occurs within a few seconds to minutes, and the etchant should not dry up, as this is a potential explosion hazard.

In summary, the main application of alcoholic picric acid 3% (picral) is in the microstructural analysis of metallic materials.

Article no.: 18931

Microetching agent for ferritic steels.

  •   Container size and order number Net price Amount
    Alcoholic picric acid 3 % (picral) - 100 ml
    Order number: 18931.00100
    12,93 €
    Alcoholic picric acid 3 % (picral) - 250 ml
    Order number: 18931.00250
    18,72 €
    Alcoholic picric acid 3 % (picral) - 500 ml
    Order number: 18931.00500
    24,09 €
    Alcoholic picric acid 3 % (picral) - 1.000 ml
    Order number: 18931.01000
    44,82 €
    Alcoholic picric acid 3 % (picral) - 2.500 ml
    Order number: 18931.02500
    92,63 €

Important Information

UN-Nummer: 2924

Warning labels:

Lagerung: 15 … 25 °C

Haltbarkeit: 24 Monate

safety data sheet

product information

Relevant Incredients:
• Ethyl alcohol
• Picric acid (C.I.: 10305)

Technical informations

specifications

Hazard and safety instructions

Signal Word 1: Gefahr
Signal Word 2: flamme, acid_red, ,
Warning labels: