Pickling gel for alloyed stainless steels

Scope of application

Removing weld scales and temper colours, old disturbed passive layers, carbon steel deposits, oxides of other materials, and marks caused by handling and damage caused by heat and mechanical treatment of surfaces as well as welds. The result is an even appearance of the surface. Intended for low-alloy materials.


Read safety instructions before use. Stir Antox 73 until homogeneous. Apply using a spray bottle or spraying device, creating a consistent-thickness layer over welds and surfaces. Depending on the type of steel, the weld type and ambient temperature, allow to act for 60–90 minutes. Rinse with min. 12 MPa pressure water. Keep rinsing until the pickled surface and rinse water are pH neutral. If the pickled surface is not completely clean, repeat the entire process. Sometimes it is better to pickle only the welds first before pickling the entire area.

Waste water disposal

Since rinse waste water is acidic and contains heavy metals, it must be collected. The collected rinse water 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 73 E 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 a face mask with acid vapour filters, protective suit and gloves.

Coverage rate

1 kg of Antox 73 E can treat 3–6 m² of area.


Antox 73 E is shipped in 10, 20 and 200 kg packages.

BASF Products


Antox 80 E


Antox 90 E


Antox 2001T

Engine Oil
Does the presence of mineral or synthetic engine oils affect the oil change mileage?
Synthetic oils have superior properties over mineral oils in many respects. Long life is one of them and as a general principle, synthetic oils provide longer oil change intervals than mineral oils. However, vehicle manufacturers (OEMs) determine the oil change intervals after a series of tests, which is most accurate for the health of the equipment.
Why are synthetic oils more expensive?
Since synthetic oils are produced with advanced technology and through very complex processes, the cost is higher than mineral oils. This affects the price of the product.
Does the presence of mineral or synthetic engine oils affect the oil change mileage?
Vehicle should be in ‘stop’ position and on a flat surface. The engine oil must be drained when hot. Ensure that the old oil in the engine crankcase fully discharged, whether used oil in engine pan is empty and whether pan bung is mounted properly.
Gear Oils
What does GL-5 appear on gear oil packages?
API classification for automotive gear oils. It is a gear oil in accordance with MIL-L-2105 D specification which contains additives that meet extreme pressure and impact loads for hypoid gear type differentials operating under heavy conditions. API GL-5 has a higher overpressure additive and is often used under severe operating conditions. Unless otherwise specified, API GL-5 should not be used where API GL-4 is recommended. Excessive pressure additives in API GL-5 can corrode yellow metals.
What is the SAE viscosity classification of gear oils?
The Association of Automotive Engineers (SAE) classifies automotive gear oils according to their kinematic viscosity at 100 ° C and pumpability at low temperatures. For example, SAE 80W-90 describes the kinematic viscosity of a gear oil ’90’ at 100 ° C in an automotive gear oil. As this number increases, the fat becomes thicker and thinner as it decreases. The kinematic viscosity of the ’90’ gear oil should be between 13.50 and 18.50 cST while the kinematic viscosity of the ‘140’ gear oil at 100 ° C should be between 24.00 and 32.50 cST. The number to the left of the letter W (Winter) determines the performance of the gear oil at low temperatures. The pumpable temperature of the ’80W’ gear oil is -26 ° C, while the pumpable temperature of the ’75W’ gear oil is -40 ° C.
What is the difference between synthetic oil and mineral oil?
Synthetic based oils are chemically obtained oils. They are produced in order to perform lubrication in applications where the mineral oils obtained in conventional way will not be sufficient in performance. Synthetic based oils provide superior protection at higher temperatures, easier fluidity and pumping at low temperatures, more stable film strength under extreme pressure, and longer change intervals in difficult operating conditions.
How to use grease?
It can be pressed directly to the bed with a manual hand pump or air pump. In systems with centralized automatic lubrication, the grease is filled into the central reservoir, the pneumatic system automatically releases grease to the greasing points at specified intervals.
What are the grease storage conditions?
Greases tend to leak during storage and the base oil tends to oscillate. The amount of oil leaking from the grease will increase over time and will vary according to storage temperature. Grease should ideally be stored in a cool, dry interior and the temperature of the environment should not exceed 30 ° C and should not be lower than 0 ° C. Grease must be protected from contaminants such as dust, dirt, moisture or rainwater and from direct sunlight.
Where is grease used?
Where oil lubrication is not feasible in practice, grease is used, especially in roller bearings.