Antox 71 E Extra

Application method

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Treatment time [min.]

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30 - 90

Coverage rate [1 kg]

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40 - 90 metres of welds

Amount [kg]




Scope of application

Removing weld scales and temper colours, old disturbed passive layers, carbon steel deposits, oxides of contaminant materials, and marks caused by handling. Intended for high-alloy chromium-nickel-molybdenum materials.


Read safety instructions before use. Shake and stir Antox 71 E Extra until homogeneous. Apply using a plastic ANTOX brush, creating a consistent-thickness layer over the weld and its surrounding area. Depending on a weld type and ambient temperature, allow to act for 30–90 minutes. Rinse with min. 12 MPa pressure water. In the event of short welds, rinsing is also possible using running water while mechanically cleaning the area with a stainless steel or plastic brush or sponge. Keep rinsing until the pickled surface and rinse water are pH neutral. If the pickled surface is not completely clean, repeat the entire process.

Waste water disposal

Since rinse waste water is acidic and contains heavy metals, it must be collected. Before rinsing off pickling paste, neutralizing paste can be applied to the surface in order to neutralize the rinse water. The collected rinse water (even if neutralized) must be disposed of ecologically. Either use own waste water treatment plant (consult the plant operator) or engage a specialized company to dispose of it.


Antox 71 E Extra contains nitric acid and hydrofluoric acid. The product label contains instructions to be adhered to. Further information is in a safety data list and is available on demand. Persons must wear protective clothing, gloves, and a face shield.

Coverage rate

1 kg of Antox 71 E Extra can treat 40–90 metres of welds


Antox 71 E Extra is shipped in 2 kg packages

Dangerous if inhaled or swallowed.
Contact causes serious skin and eye damage!



General instructions: Immediately remove clothing contaminated with the product. Do not remove the respirator mask until contaminated clothing is removed.
If inhaled: Transport the person to a place with fresh air. If the person is unconscious, place them into the recovery position, seek medical help.
In the event of skin contact: Immediately wash the affected area with water and soap and rinse thoroughly. Immediately apply Calcium Gluconate 400 solution or gel.
In the event of eye contact: Rinse out the eye with the eyelid open for several minutes using running water, seek medical help.
If swallowed: Do not induce vomiting, call in a doctor immediately. Drink plenty of water and get fresh air. Call in a doctor immediately.

R 26/27/28 Very toxic by inhalation, in contact with skin, and if swallowed

R 35 Causes severe burns

R 37 Irritating to respiratory system

S 4 Keep away from living quarters

S 7/9 Keep container tightly closed, in a well-ventilated place

S 20 When using, do not eat or drink

S 26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice

S 27/28 After contact with skin, take off immediately all contaminated clothing and wash immediately with plenty of water

S 36/37/39 Wear suitable protective clothing, gloves and eye/face protection

S 45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible)

S 60 This material and its container must be disposed of as hazardous waste

Material Safety Data Sheet


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