Date of Issue: April 2012

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GPS Safety Summary

Bentonite, acid-leached

Chemical Identity

Name: Bentonite, acid-leached

CAS number: 70131-50-9

Molecular formula: unspecified for this UVCB substance

Structure 

 

Product Uses

Bentonite, acid-leached is a UVCB (unknown or variable composition, or of biological origin)

substance which can be identified by its origin (bentonite) and its process (acid-leaching).

Bentonite originates from a natural deposit of clay minerals from the smectite group, the most 

common form in geological terms being montmorillonite. It is used in industrial/professional as 

well as consumer settings. Its main applications include: agents adsorbing and absorbing gases 

or liquids, binding agents, fertilizers, fillers, intermediates, lubricants and lubricant additives, 

pH-regulating agents, bleaching agents, filter aids, separation medium, water treatment 

chemicals and as catalysts.

IUPAC name:

Bentonite, acid-leached

BASF brand names: 

CedesorbTM

F-200

F-220

F-24 series

Hydrocol®

Novasil Plus

Organosorb®

Telioform®

For synonyms see end of 

document
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Benefits

Activated Bentonite (Mineral/Clay) Adsorbents

For purification of aromatic streams such as benzene, toluene and xylene (BTX), or cumene, FSeries acid-activated adsorbents offer the longest life span for removing olefin and nitrogen -

key to preventing unplanned shutdowns. BASF provides a portfolio of aromatic solutions, 

including F-24, the industry standard, which enables companies to:

- Dictate moisture levels according to specific needs

- Utilize well-proven activation technology (H2S04) to ensure the highest performance

- Ensure superior water stability to withstand process disturbances

- Accommodate a range of operational requirements: high pressure drop, high selectivity 

or maximum cycle length

- Assure maximum value for products sold as feedstock for petrochemical, specialty 

chemicals and resin production

Cedesorb® - bentonite clay for high production efficiency

Cedesorb® is a well-established range of bentonite clays specifically designed to improve paper 

machine production efficiency while optimizing paper quality. Cedesorb® can be used to passify 

detrimental substances, leading to superior paper machine cleanliness. 

Health Information

Human Health Safety Assessment

Note: The information contained in the table below may be useful to someone handling the 

concentrated substance such as a manufacturer or transporter. Consumers are not likely to 

come in contact with the concentrated substance. The data, while verifiable, are not intended to 

be comprehensive nor replace the data found in the (M)SDS. 

Effect Assessment Result

Acute Toxicity Virtually nontoxic after a single ingestion.

Virtually nontoxic after a single skin contact.

Virtually nontoxic by inhalation.

Irritation Not irritating to the skin.

Not irritating to the eyes.

Sensitization Skin sensitizing effects were not observed in animal 

studies.

Mutagenicity No mutagenic effect was found in various tests with 

bacteria and mammalian cell culture. The product has not 

been tested. The statement has been derived from 

products of similar structure or composition.
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Toxicity after repeated exposure The whole of the information available provides no 

indication of a toxic effect after repeated exposure. The 

product has not been tested. The statement has been

derived from products of similar structure or 

composition.

Environmental Information

Environment Safety Assessment

Note: The information in this chapter is intended to provide brief and general information of this 

substance’s environmental impact. The results in the table below refer to testing performed with 

the concentrated substance. The data contained in this section explain the relative effect of the 

concentrated substance on the environment, as defined by certain tests.

Effect Assessment Result

Aquatic Toxicity With high probability acutely not harmful to aquatic 

organisms.

Persistence and degradability Inorganic substance, therefore biodegradation testing is not 

applicable.

Bioaccumulation potential Accumulation in organisms is not to be expected.

Physical/Chemical Properties

Phys/Chem Safety Assessment

 Bentonite, acid-leached is an off-white inorganic solid which does not have flammable or 

explosive properties.

Note: The results in the table below refer to testing performed with the concentrated substance. 

It is not intended to be comprehensive or to replace information found in the (M)SDS.

Property Value

Physical state Solid

Melting / freezing point > 450 °C at 1013 hPa

Boiling point Not applicable. Melting point is above 

300 °C.
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Flash point Not applicable

Flammability Non-flammable

Explosive properties Non-explosive

Self-ignition temperature Non-combustible

Exposure Potential

 Workplace exposure: Based on the very low toxicity of Betonite, acid-leached exposure 

is considered to be without risk. Betonite, acid-leached released during manufacturing or 

handling is of no concern for the health of workers since it does not induce any adverse 

effects at relevant doses. Nevertheless, workers should follow the recommended safety 

measures in the extended Safety Data Sheet (eSDS).

 Consumer exposure: Based on the very low toxicity of betonite, acid-leached exposure is

considered to be without risk. Betonite, acid-leached released during handling is of no 

concern for the health of consumers since consumers will not come into contact with 

harmful levels of Betonite, acid-leached.

 Environmental exposure: Betonite, acid-leached has little toxic potential and is not 

expected to accumulate in organisms. Although the substance is not readily 

biodegradable it can be largely eliminated from the water body by abiotic processes, e.g. 

mechanical separation. Thus, the substance poses no unacceptable risk to the 

environment. Consequently, all identified uses are considered to be safe for the 

environment.

Recommended Handling Measures 

The recommended safety measures generally apply in contact with the concentrated substance. 

It is NOT intended to replace the comprehensive guidance found in the (M)SDS, only supplement 

it. Please refer to the (M)SDS for specific safety and first aid measures.

When using concentrated chemicals always make sure that there is adequate ventilation. 

Always use appropriate chemical resistant gloves to protect your hands and skin and always 

wear eye protection such as chemical goggles. Do not eat, drink, or smoke where chemicals are 

handled, processed, or stored. Wash hands and skin following contact. If the substance gets into 

your eyes, rinse eyes thoroughly for at least 15 minutes with tap water and seek medical 
Date of Issue: April 2012

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attention. For specific advice please consult the corresponding (Material) Safety Data Sheet of 

the substance.

All effluent releases that may include the substance must be directed to a (municipal) waste 

water treatment plant that removes the substance from the final releases to the receiving water. 

Regulatory Information / Classification and Labeling

Under GHS substances are classified according to their physical, health, and environmental 

hazards. The hazards are communicated via specific labels and the (M)SDS. GHS attempts to 

standardize hazard communication so that the intended audience (workers, consumers, 

transport workers, and emergency responders) can better understand the hazards of the 

chemicals in use.

Note: The hazard statements and symbols presented here refer to the hazard properties of the 

concentrated substance and are meant to provide a brief overview of the substance’s labeling. It 

is not intended to be comprehensive or to replace information found in the (M)SDS.

Labeling according to UN GHS 

UN GHS is the basis for country specific GHS labeling

Based on available data, labeling is currently not required.

Additional information 

1. IFA GESTIS-database on hazardous substances 

http://www.dguv.de/ifa/en/gestis/stoffdb/index.jsp

2. Information on registered substance (ECHA) 

http://apps.echa.europa.eu/registered/registered-sub.aspx

3. BASF Product finder 

http://www.basf.com/group/corporate/en/Productfinder/index?pfs=df9d925d264cf5c149e39c7ee98561&query=bentonite&pfs_click=true
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Most commonly used synonyms

» Bentonite F2

» Bentonite F24

» Bentonite F100

» Bentonite F105

Disclaimer

This Product Safety Summary is intended to provide a general overview of the chemical 

substance. It contains basic information and is not intended to provide emergency response 

information, medical information or treatment information. The summary cannot be relied on 

to provide in-depth safety and health information. In-depth safety and health information must 

be obtained from the Material Safety Data Sheet ((M)SDS) for the chemical substance.

IMPORTANT: While the data and information contained herein are presented in good faith and 

believed to be accurate at the date of printing, it is provided for your guidance only and may be 

revised in the future. No warranties of any kind, either express or implied, of merchantability, 

fitness for a particular purpose or of any other nature are made regarding the data or 

information provided. Further, it is expressly understood that the data and information 

furnished by BASF hereunder are given gratis and BASF assumes no obligation or liability 

whatsoever resulting from use of or reliance on the data and information given.

Contact

For further information on this substance or GPS safety summaries in general, please contact: 

info.gps@basf.com