Dimethyl sulfoxide
US Research Nanomaterials, Inc.

www.us-nano.com

SAFTY DATA SHEET
Revised Date 07/11/2021

1. PRODUCT AND COMPANY IDENTIFICATION
1.1 Product identifiers
Product name: Dimethyl sulfoxide (DMSO)
Product Number : N/A
DMSO CAS#: 67-68-5

1.2 Relevant identified uses of the substance or mixture and uses advised against
Identified uses : Research, synthesis of nanomaterial dispersions

1.3 Details of the supplier of the safety data sheet
Company: US Research Nanomaterials, Inc.
3302 Twig Leaf Lane
Houston, TX 77084
USATelephone: +1 832-460-3661Fax: +1 281-492-8628

1.4 Emergency telephone number
Emergency Phone # : (832) 359-7887

2. HAZARDS IDENTIFICATION
2.1 Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
Flammable liquids (Category 2), H225
Skin irritation (Category 2), H315
Reproductive toxicity (Category 2), H361
Specific target organ toxicity - single exposure (Category 3), Central nervous system, H336
Specific target organ toxicity - repeated exposure (Category 2), H373
Aspiration hazard (Category 1), H304
Acute aquatic toxicity (Category 2), H401
For the full text of the H-Statements mentioned in this Section, see Section 16.
2.2 GHS Label elements, including precautionary statements

Pictogramnone

Signal wordWarning

Hazard statement(s)H227 Combustible liquid.
Precautionary statement(s)P210 Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P280 Wear protective gloves/ eye protection/ face protection.
P370 + P378 In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
P403 + P235 Store in a well-ventilated place. Keep cool.
P501 Dispose of contents/ container to an approved waste disposal plant.
2.3 Hazards not otherwise classified (HNOC) or not covered by GHS
Rapidly absorbed through skin.

3. COMPOSITION/INFORMATION ON INGREDIENTS
3.1 Substances
Synonyms : DMSO
Methyl sulfoxide
Formula : C2H6OS Molecular weight : 78.13 g/mol
CAS-No. : 67-68-5
Hazardous components
Component: Dimethyl sulfoxide
Classification: Flam. Liq. 4; H227
Concentration: 90-100%
For the full text of the H-Statements mentioned in this Section, see Section 16.

4. FIRST AID MEASURES4.1 Description of first aid measures
General advice

Consult a physician. Show this safety data sheet to the doctor in attendance. Move out of dangerous
area.
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.
In case of skin contact
Wash off with soap and plenty of water. Consult a physician.
In case of eye contact
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
If swallowed
Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth withwater. Consult a physician.

4.2 Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labeling (see section 2.2) and/or insection 11

4.3 Indication of any immediate medical attention and special treatment needed
no data available

5. FIREFIGHTING MEASURES
5.1 Extinguishing media

Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

Unsuitable extinguishing media
Do NOT use water jet.
5.2 Special hazards arising from the substance or mixture
No data available

5.3 Advice for firefighters
Wear self contained breathing apparatus for firefighting if necessary.

5.4 Further information
Use water spray to cool unopened containers.

6. ACCIDENTAL RELEASE MEASURES
6.1 Personal precautions, protective equipment and emergency procedures
Avoid breathing vapors, mist or gas. Remove all sources of ignition. Beware of vapors accumulating toform explosive concentrations. Vapors can accumulate in low areas.
For personal protection see section 8.
6.2 Environmental precautions
Prevent further leakage or spillage if safe to do so. Do not let product enter drains.
6.3 Methods and materials for containment and cleaning up
Contain spillage, and then collect with non-combustible absorbent material, (e.g. sand, earth,diatomaceous earth, vermiculite) and place in container for disposal according to local / national
regulations (see section 13). Keep in suitable, closed containers for disposal.
6.4 Reference to other sections
For disposal see section 13.

7. HANDLING AND STORAGE
7.1 Precautions for safe handling
Avoid inhalation of vapor or mist.
Keep away from sources of ignition - No smoking. Take measures to prevent the build up of electrostaticcharge.
For precautions see section 2.2..
7.2 Conditions for safe storage, including any incompatibilities
Keep container tightly closed in a dry and well-ventilated place.
Store under inert gas. hygroscopic
Storage class (TRGS 510): 10: Combustible liquids
7.3 Specific end use(s)Apart from the uses mentioned in section 1.2 no other specific uses are stipulated

8. EXPOSURE CONTROLS/PERSONAL PROTECTION

8.1 Control parameters
Components with workplace control parameters

250 ppm
Basis: USA. Workplace Environmental Exposure Levels (WEEL)
8.2 Exposure controls
Appropriate engineering controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at
the end of workday.
Personal protective equipment
Eye/face protection
Safety glasses with side-shields conforming to EN166 Use equipment for eye protection tested andapproved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without
touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves
after use in accordance with applicable laws and good laboratory practices. Wash and dry hands.
Body Protection
Impervious clothing, flame retardant antistatic protective clothing. The type of protective equipment must
be selected according to the concentration and amount of the dangerous substance at the specificworkplace.
Respiratory protection
Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator withmultipurpose combination (US) or type AXBEK (EN 14387) respirator cartridges as a backup toengineering controls. If the respirator is the sole means of protection, use a full-face supplied airrespirator. Use respirators and components tested and approved under appropriate government
standards such as NIOSH (US) or CEN (EU).
Control of environmental exposure
Do not let product enter drains.

9. PHYSICAL AND CHEMICAL PROPERTIES
9.1 Information on basic physical and chemical propertiesa) Appearance: Form: liquid, clear, colorlessb) Odor: sulphurousc) Odor Threshold: no data availabled) pH: Not applicablee) Melting point/freezing point: Melting point/range: 16 - 19 °C (61 - 66 °F)f) Initial boiling point and boiling range: 189 °C (372 °F)g) Flash point: 87 °C (189 °F) - closed cup - ASTM D 93h) Evaporation rate: no data availablei) Flammability (solid, gas): no data availablej) Upper/lower flammability or explosive limits: Upper explosion limit: 42 %(V), Lower explosion limit:
3.5 %(V)k) Vapor pressure: 0.55 hPa (0.41 mmHg) at 20 °C (68 °F) 4 hPa (3 mmHg) at 50 °C (122 °F)l) Vapor density: 2.70 - (Air = 1.0)m) Relative density: 1.1 g/mLn) Water solubility: completely miscibleo) Partition coefficient - noctanol/water: log Pow: -1.35p) Auto-ignition temperature: 300 - 302 °C (572 - 576 °F)q) Decomposition temperature: > 190 °C (> 374 °F)r) Viscosity: no data availables) Explosive properties: no data availablet) Oxidizing properties: The substance or mixture is not classified as oxidizing.

9.2 Other safety informationSolubility in other solvents: Alcohol - soluble, Diethylether - soluble
Surface tension: 43.5 mN/m at 20 °C (68 °F)
Relative vapor density: 2.70 - (Air = 1.0)

10. STABILITY AND REACTIVITY
10.1 Reactivity
no data available

10.2 Chemical stability
Stable under recommended storage conditions.

10.3 Possibility of hazardous reactions
No data available
10.4 Conditions to avoidHeat, flames and sparks.

10.5 Incompatible materials
Acid chlorides, Phosphorus halides, Strong acids, Strong oxidizing agents, Strong reducing agents
10.6 Hazardous decomposition products
Other decomposition products - no data availableHazardous decomposition products formed under fire conditions. - Carbon oxides
In the event of fire: see section 511. TOXICOLOGICAL INFORMATION
11.1 Information on toxicological effects
Acute toxicity

LD50 Oral - Rat - 14,500 mg/kg
LC50 Inhalation - Rat - 4 h - 40250 ppm
LD50 Dermal - Rabbit - > 5,000 mg/kg
No data available
Skin corrosion/irritation

Mild skin irritation
Serious eye damage/eye irritation
Causes serious eye irritation.
Respiratory or skin sensitization
No data available
Germ cell mutagenicity
No data available
Carcinogenicity
No data available
Reproductive toxicity
No data available
Aspiration hazard
No data available
Additional Information

To the best of our knowledge, the chemical, physical, and toxicological properties have not beenthoroughly investigated.

12. ECOLOGICAL INFORMATION
12.1 Toxicity
no data available

12.2 Persistence and degradability
Readily biodegradable.

12.3 Bioaccumulative potential
No data available
12.4 Mobility in soil
no data available

12.5 Results of PBT and vPvB assessment
PBT/vPvB assessment not available as chemical safety assessment not required/not conducted12.6 Other adverse effects
no data available

13. DISPOSAL CONSIDERATIONS
13.1 Waste treatment methods
ProductOffer surplus and non-recyclable solutions to a licensed disposal company. This combustible material
may be burned in a chemical incinerator equipped with an afterburner and scrubber.
Contaminated packaging
Dispose of as unused product.

14. TRANSPORT INFORMATION
DOT (US)NA-Number: 1993
Class: NONE
Packing group: III
Proper shipping name: Combustible liquid, n.o.s. (Dimethyl sulfoxide)
Reportable Quantity (RQ):
Poison Inhalation Hazard: No
IMDGNot dangerous goods
IATA

Not dangerous goods

15. REGULATORY INFORMATIONSARA 302 Components

This material does not contain any components with a section 302 EHS TPQ.
SARA 313 Components

This material does not contain any chemical components with known CAS numbers that exceed thethreshold (De Minimis) reporting levels established by SARA Title III, Section 313.

SARA 311/312 Hazards
Fire Hazard, Chronic Health Hazard

16. OTHER INFORMATION
Full text of H-Statements referred to under sections 2 and 3.

Flam. Liq. Flammable liquids
H227 Combustible liquid
Further information
The above information is believed to be correct but does not purport to be all inclusive and shall be used
only as a guide. The information in this document is based on the present state of our knowledge and isapplicable to the product with regard to appropriate safety precautions. It does not represent any
guarantee of the properties of the product.
Employers should use this information only as a supplement to other information gathered by them, andshould make independent judgment of suitability of this information to ensure proper use and protect thehealth and safety of employees. This information is furnished without warranty, and any use of theproduct not in conformance with this Safety Data Sheet, or in combination with any other product orprocess, is the responsibility of the user.