Date of Issue: April 2012 1 

## 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



### P roduct Uses

Bentonite, acid

- leached is a UVCB (unknown o r v ariable c omposition, or of b iological o rigin ) 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

com mon form in geological terms being montmorillonite. It is used in industrial/professional as well as consumer settings. Its main applications include: a gents adsorbing and absorbing gases or liquids

, b inding agents

, f ertili z ers , f illers

, i ntermediates

, l ub ricants and lubricant additives

, pH

- regulating agents

, b leaching agents

, f ilter aid s , separation medium, water treatment
chemicals and as catalyst s. IUPAC name : Bentonite, acid

- leached

BASF brand names : Cedesorb TM

F

- 200

F

- 220

F

- 24 series Hydrocol ®
Novasil Plus Organosorb ®
Telioform ®

For synonyms see end of
documentDate of Issue: April 2012 2 

### Benefits

Activated Bentonite (Mineral/Clay) Adsorbents For purification of aromatic streams such as b enzen e, t oluene and x ylene (BTX), or cumene, F

Series 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 s tandard, 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

- Accommoda te 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 p roduction 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.



### H ealth 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.
Virtual ly nontoxic after a single skin contact. Virtually nontoxic by inhalation.

Irritation Not irritating to the skin. Not irritating to the eyes.

Sensitiz ation Skin sensitizing effects were not observed in animal
studies. Mutagenicity No mutagenic effect wa s found in various tests with
bacteria and mammalian cell culture. The product has no t
been tested. The statement has been derived from products of similar structure or composition.Date of Issue: April 2012 3 Toxicity after repeated exposure The whole of the information available p rovides 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 inform ation 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 r elative 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, t herefore 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 s tate Solid
Melting / freezing point > 450 °C at 1013 hPa

Boiling point Not applicable. Melting point is above

300 °C.Date of Issue: April 2012 4 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

- l eached 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 pos es 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 i s 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.
Alw ays 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 t he substance gets into your eyes, rinse eyes thoroughly for at least 15 minutes with tap water and seek medicalDate of Issue: April 2012 5 attention. For specific advice please consult the corresponding (Material) Safety Data Sheet of
the substance.

All effluent releases that may i nclude the substance must be directed to a (municipal) waste water treatment plant that removes the substance from the final releases to the receiving water.



### R egulatory Information / Classification and Labeling

Under GHS substances are classified accor ding 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 labeli ng

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

.

Labeling according to UN GHS

UN GHS is t he basis for country specific G H S labeling

Based on available data, labeling is currently not required.



### Additional info rmation

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/Product

finder/index?pfs=df9d925d264cf5c149e39c7ee98561&query=bentonite&pfs_click=trueDate of Issue: April 2012 6 

### M ost commonly used synonyms

» Bentonite F2

» Bentonite F24

» Bentonite F100

» Bentonite F105



### Disclaimer

This Product Safety Summar y 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 an d 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