1. Identification

Product identifier: MicroSorb® ER, IS, SC-G
Other means of identification: NONE
Recommended use: Bioremediation of hydrocarbons, sewage and industrial waste,
opportunistics (algae, E.coli, etc.)
Recommended restrictions: None known. Workers (and your customers or users in the case of resale) should
be informed of the potential presence of respirable dust. Appropriate training in the proper use and handling of this material
should be provided as required under applicable regulations.

2. Hazard(s) identification
This product contains less than 0.25% respirable crystalline silica according to a modified version of the NIOSH 7500 method. It
does not meet the criteria for classification as hazardous according to criteria set forth by OSHA Hazard Communication
Standard (29 CFR 1910.1200) or EC Regulation 1272/2008.
The microbes are considered Class 1 and have not been connected to any safety issues

Physical hazards: Can be slippery when wet
Health hazards: Environmental Not classified
hazards: OSHA defined Not classified
hazards: Label elements Not classified
Hazard symbol: None
Signal word: None
Hazard statement: The substance does not meet the criteria for classification
Precautionary statement  
Prevention: Observe good industrial hygiene practices
Response: Wash hands after handling
Storage: Keep dry and store away from incompatible materials
Disposal: Dispose of waste and residues in accordance with local authority requirements

Hazard(s) not otherwise classified (HN OC): None Known

Supplemental information: Not Applicable

3. Composition/information on ingredients


Chemical ·name Common name & synonyms CAS number %
Bentonite Smectite, Bentonite 1302-78-9 85
Quartz   14808-60-7 <= 8
Cristobalite   14464-46-1 <= 2
Mixed microbe population   NONE >=5

Bentonite is a UVCB substance sub -type 4. The purity of the product is 100% w/w. Bentonite is composed mainly of
smectite group minerals but the composition is varied, as expected for a UVCB substance , and other mineral
constituents will be present in small and varying amounts. These minor constituents are not relevant for classification
and labelling.

Composition comments: Occupational Exposure Limits for constituents are listed in Section 8. The purity of the product
is 100% w/w. Impurities are not applicable for a UVCB substance.

4. First-aid Measures

Inhalation: If dust from the material is inhaled, remove the affected person immediately to fresh air. Call a physician if
symptoms develop or persist. No specific first aid measures noted.
Skin contact: Can be drying. Get medical attention if irritation develops and persists. No specific first aid measures
noted. Wash skin with soap and water.
Eye contact: Can be irritating. No specific first aid measures noted. Flush thoroughly with water. If irritation occurs, get
medical assistance.
Ingestion: No specific first aid measures noted. Rinse mouth thoroughly. Get medical attention if any discomfort occurs.
Most important symptoms/effects, acute and delayed: Dust in the eyes will cause irritation.
Indication of immediate medical attention and special treatment needed: Provide supportive measures and treat
General information: No hazards which require special first aid measures. Provide general supportive measures and
treat symptomatically.

5. Fire-fighting measures

Suitable extinguishing media: Water fog. Foam. Dry chemical powder. Carbon dioxide (CO2). Use any media suitable
for the surrounding fires.
Unsuitable extinguishing media: Not applicable, non-combustible.
Specific hazards arising from the chemical: None known. The product itself does not burn.
Special protective equipment and precautions for firefighters: Material can be slippery when wet.
Fire fighting equipment/instructions: In the event of fire, cool tanks with water spray. Material can be slippery when wet.
Specific methods: Cool containers exposed to flames with water until well after the fire is out
General fire hazards: No unusual fire or explosion hazards noted. This material will not burn.

6. Accidental release measures

Personal precautions, protective equipment and emergency procedures: Keep unnecessary personnel away. Material
can be slippery when wet. Use a NIOSH/MSHA approved respirator if there is a risk of exposure to dust/fume at levels
exceeding the exposure limits. Avoid inhalation of dust from the spilled material. For personal protection see section 8 of
the SOS. No special precautions are necessary beyond normal good hygiene practices. See Section 8 for additional
personal protection advice when handling this product.

Methods and materials for containment and cleaning up: If sweeping of a contaminated area is necessary use a
dust suppressant agent which does not react with the product. Sweep up or vacuum up spillage and collect in
suitable container for disposal. Collect dust using a vacuum cleaner equipped with HEPA filter. Minimize dust generation
and accumulation. Avoid the generation of dusts during clean-up. Following product recovery, flush area with water. For
waste disposal, see section 13 of the SOS. Collect powder using special dust vacuum cleaner with particle filter or
carefully sweep into closed container.

Environmental precautions: Prevent further leakage or spillage if safe to do so. No special environmental precautions

7. Handling and storage

Precautions for safe handling: Minimize dust generation and accumulation. Provide appropriate exhaust ventilation at
places where dust is formed. Avoid breathing dust. Avoid contact with skin and eyes. In case of insufficient ventilation,
wear suitable respiratory equipment. Practice good housekeeping.

Conditions for safe storage, including any incompatibilities: No special restrictions on storage with other products.
Store in a dry area. Store in original tightly closed container. Keep the container dry. Store away from incompatible
materials (see Section 10 of the SOS). Guard against dust accumulation of this material.

8. Exposure controls /personal protection
Occupational exposure limits
US. OSHA Table Z-3 (29 CFR 1910.1 000)

Constituents Type Value Form
INERT OR NUISANCE DUSTS TWA 5 mg/m3 Respirable fraction.
    15 mg/m3 Total dust
    50 mppcf Total dust
    15 mppcf Respirable fraction

Biological limit values: No biological exposure limits noted for the ingredient(s).
Appropriate engineering controls: Ventilation should be sufficient to effectively remove and prevent buildup of any
dusts or fumes that may be generated during handling or thermal processing. If engineering measures are not sufficient
to maintain concentrations of dust particulates below the OEL, suitable respiratory protection must be worn.
Individual protection measures, such as personal protective equipment
Eye/face protection: Use tight fitting goggles if dust is generated. Wear dust-resistant safety goggles where there is
danger of eye contact.
Skin protection: No protection is ordinarily required under normal conditions of use
Hand protection: Wear gloves to prevent drying 

Other: Normal work clothing (long sleeved shirts and long pants) is recommended.
Respiratory protection: Use a NIOSH/MSHA approved respirator if there is a risk of exposure to dust/fume at levels exceeding the exposure limits.
Thermal hazards: Not applicable
General hygiene considerations: Always observe good personal hygiene measures, such as washing after handling the
material and before eating, drinking, and/or smoking. Use good industrial hygiene practices in handling this material.

9. Physical and chemical properties

Appearance: Fine powder
Physical state: Solid. Color: Light grey
Odor: Slight oil smell
Odor threshold: Not applicable.
pH: 8.5
Melting point: > 842 °F (> 450 °C) Freezing point: Not applicable
Initial boiling point/range: Not applicable
Flash point: Not applicable
Evaporation rate: Not available
Flammability (solid, gas): This product is not flammable
Upper/lower flammability or explosive limits
Flammability limit - lower (%): Not applicable
Flammability limit - upper (%): Not applicable
Explosive limit - lower (%): Not available.
Explosive limit - upper (%): Not available
Vapor pressure: Not applicable.
Vapor density: Not applicable.
Relative density: 2.6 g/cm³
Solubility (water): < 0.9 mg/l
Partition coefficient: Not applicable
(n-octanol/water): Not applicable.
Auto-ignition temperature: Not applicable.
Decomposition temperature: > 932 °F (> 500 °C)
Viscosity: Not applicable.
Viscosity temperature: Not applicable.
Other information
Bulk density: 0.9 - 1.4 g/cm³
Explosive limit: Not applicable.
Explosive properties: Not explosive
Explosivity: Not applicable
Flame extension: Not applicable
Flammability: Not applicable
Flammability(flashback): Not applicable.
Flammability (Heat of combustion): Not applicable.
Flammability (Train fire): Not applicable.
Flammability class: Not applicable.
Flash point class: Not flammable
Molecular formula: UVCB Substance
Molecular weight: Not applicable.
Oxidizing properties: None.
Percent volatile: 0 %
pH in aqueous solution: 8.5
Specific gravity: Not applicable.
VOC (Weight %): 0 %

10. Stability and reactivity
Reactivity: The product is stable and non-reactive under normal conditions of use, storage and transport.
Chemical stability: Stable at normal conditions.
Possibility of hazardous reactions: Will not occur.
Conditions to avoid: Moisture. Avoid temperatures exceeding the decomposition temperature. Contact with
incompatible materials. Avoid dispersal of dust in the air (i.e., clearing dust surfaces with compressed air).
Incompatible materials: None known.
Hazardous decomposition products: None.

11. Toxicological information
Information on likely routes of exposure
Inhalation: Inhalation of dusts may cause respiratory irritation.
Skin contact: Not classified.
Eye contact: Dust in the eyes will cause irritation.
Ingestion: Not classified.
Symptoms related to the physical, chemical and toxicological characteristics: None known.

Information on toxicological effects

Product Species Test Results
MicroSorb formula    
LC50 Rat > 5.27 mg/I, 4 hr OECD 436
LDSO Rat > 2000 mg/kg OECD 425

 * Estimates for product may be based on additional component data not shown.

Skin corrosion/irritation: Not classified.
Serious eye damage/eye irritation: Dust in the eyes will cause irritation. Mild irritant to eyes (according to the modified
Kay & Calandra criteria)
Respiratory or skin sensitization
Respiratory sensitization Not classified.
Skin sensitization: Not classified.
Germ cell mutagenicity: Not classified.
Carcinogenicity: In June 2003, SCOEL (the EU Scientific Committee on Occupational exposure Limits) concluded that
the main effect in humans of the inhalation of respirable crystalline silica dust is silicosis. "There is sufficient information
to conclude that the relative risk of lung cancer is increased in persons with silicosis (and, apparently, not in employees
without silicosis exposed to silica dust in quarries and in the ceramic industry). Therefore, preventing the onset of
silicosis will also reduce the cancer risk ..." (SCOEL SUM Doc 94-final, June 2003) According to the current state of the
art, worker protection against silico sis can be consistently assured by respecting the existing regulatory occupational
exposure limits . Occupational exposure to respirable dust and respirable crystalline silica should be monitored and
controlled. No carcinogenicity data available for this product. Sepiolite was evaluated by IARC as class 3 ("Cannot be
classified as to carcinogenicity to humans"). Based on read-across with sepiolite, bentonite was assessed as noncarcinogenic.
Therefore classification of bentonite for carcinogenicity is not warranted.
This product contains less than 0.25% respirable crystalline silica according to a modified version of the NIOSH 7500
method. It does not meet the criteria for classification as hazardous according to criteria set forth by OSHA Hazard
Communication Standard (29 CFR 1910.1200) or EC Regulation 1272/2008
IARC Monographs. Overall Evaluation of Carcinogenicity: Not available.
US. National Toxicology Program (NTP) Report on Carcinogens: Not available
Reproductive toxicity: Not classified.
Specific target organ toxicity - single exposure. Not classified.
Specific target organ toxicity - repeated exposure. Not classified
Aspiration hazard: Not available.

12. Ecological information
Ecotoxicity: The product is not classified as environmentally hazardous. However, this does not exclude the possibility
that large or frequent spills can have a harmful or damaging effect on the environment.

Product Species Test Results
Bentonite (CAS 1302-78-9)    
Algae EC50 Freshwater algae > 100 mg/I, 72 hours
Crustacea EC50 Coon stripe shrimp (Pandalus danae) 24.8 mg/I, 96 hours
  Daphnia > 100 mg/I, 48 hours
  Dungeness or edible crab
(Cancer magister)
81.6 mg/I, 96 hours
Fish LC50 Freshwater fish 16000 mg/I. 96 hours
  Marine water fish 2800 - 3200 mg/I, 24 hours

* Estimates for product may be based on additional component data not shown.

Persistence and degradability: Not relevant for inorganic substances
Bioaccumulative potential:Will not bio-accumulate
Mobility in soil: Bentonite is almost insoluble and thus presents a low mobility in most soils. The microbes are slightly
mobile and present a low mobility in most soils
Mobility in general: The product has poor water-solubility.
Other adverse effects: No other adverse environmental effects (e.g. ozone depletion, photochemical ozone creation
potential, endocrine disruption, global warming potential) are expected from this component.

13. Disposal considerations
Disposal instructions: Collect and reclaim or dispose in sealed containers at licensed waste disposal site. Dispose in
accordance with all applicable regulations.
Local disposal regulations: Dispose in accordance with all applicable regulations.
Hazardous waste code: The waste code should be assigned in discussion between the user, the producer and the waste
disposal company.
Waste from residues / unused products: Dispose of in accordance with local regulations. Empty containers or liners
may retain some product residues. This material and its container must be disposed of in a safe manner (see: Disposal
Contaminated packaging: Empty containers should be taken to an approved waste handling site for recycling or
disposal. Since emptied containers may retain product residue, follow label warnings even after container is emptied.
Store containers and offer for recycling of material when in accordance with the local regulations.

14. Transport information

DOT: Not regulated as dangerous goods.
IATA: Not regulated as dangerous goods.
IMDG: Not regulated as dangerous goods.
Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code: Not applicable.

15. Regulatory information
US federal regulations
CERCLA Hazardous Sub stance List (40 CFR 302.4): Not listed.
Superfund Amendments and Reauthorization Act of 1986 (SARA)
Hazard categories Immediate Hazard – No
Delayed Hazard – No
Fire Hazard - No
Pressure Hazard – No
Reactivity Hazard – No
SARA 302 Extremely hazardous substance: Not listed.
SARA 311/312 Hazardous chemical: No
SARA 313 (TRI reporting) : Not regulated.
Other federal regulations
Clean Air Act (CAA) Section 112 Hazardous Air Pollutants (HAPs) List: Not regulated.
Clean Air Act (CAA) Section 112(r) Accidental Release Prevention (40 CFR 68.130): Not regulated.
Safe Drinking Water Act (SOW A) : Not regulated.
Food and Drug: Total food additive
Administration (FDA): Direct food additive
GRAS food additive
US state regulations
US. California Controlled Substances.
CA Department of Justice (California Health and Safety Code Section 11100): Not listed.
US. Massachusetts RTK - Substance List: Not regulated.
US. New Jersey Worker and Community Right-to-Know Act: Not regulated.
US. Pennsylvania Worker and Community Right-to- Know Law: Not listed.
US. Rhode Island RTK: Not regulated.
US. California Proposition 65
California Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65): This material is not known to contain any chemicals currently listed as carcinogens or reproductive toxins.

International Inventories

Country(s) or region Inventory name On inventory
Australia Australian Inventory of Chemical Substances (AICS) Yes
Canada Domestic Substances List (DSL) Yes
Canada Non-Domestic Substances List (NDSL) No
China Inventory of Existing Chemical Substances in China (IECSC) Yes
Europe European Inventory of Existing Commercial Chemical Substances (EINECS) Yes
Europe European List of Notified Chemical Substances (ELINCS) Yes
Japan Inventory of Existing and New Chemical Substances (ENCS) No
Korea Existing Chemicals List (ECL) Yes
New Zealand New Zealand Inventory Yes
Philippines Philippine Inventory of Chemicals and Chemical Substances (PICCS) Yes

United States
& Puerto Rico

Toxic Substances Control Act (TSCA) Inventory Yes

*A "Yes" indicates that all components of this product comply with the inventory requirements administered by the governing country(s).
A "No" indicates that one or more components of the product are not listed or exempt from listing on the inventory administered by the governing country(s).

16. Other information, including date of preparation or last revision
Issue date July 2017 Version #1
Further information: This safety datasheet only contains information relating to safety and does not replace any product
information or product specification.

HMIS® ratings: Health: 1 Flammability: O Physical hazard: 0
NFPA ratings: Health: 1 Flammability: O Instability: 0

List of abbreviations

SWERF = Size-Weighted Relevant Fine Fraction methodology is a scientific method developed to quantify the content
of respirable particles within a bulk product. All details about the SWERF method are available at www.crystallinesilica.eu.

UVCB = a substance of Unknown or Variable composition, Complex reaction products or Biological materials
References: For any information on literature references or toxicity/ ecotoxicity studies, please contact the supplier.
Disclaimer: The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and
belief at the date of its publication. The information given is designed only as a guidance for safe handling, use,
processing, storage, transportation , disposal and release and is not to be considered a warranty or quality
specification . The manufacturer expressly does not make any representations, warranties, or guarantees as to its
accuracy, reliability or completeness nor assumes any liability, for its use. It is the user's responsibility to verify the
suitability and completeness of such information for each particular use. The information relates only to the specific
material designated and may not be valid for such material used in combination with any other materials or in any
process, unless specified in the text. The information in the sheet was written based on the best knowledge and
experience currently available.