SECTION 2. HAZARDS IDENTIFICATION

Physical hazards Not classified.
Health hazards Acute toxicity, oral Category 3
Acute toxicity, inhalation Category 3
Specific target organ toxicity, repeated exposure Category 2
Hazardous to the aquatic environment, acute hazard Category 1
Environmental hazards
Hazardous to the aquatic environment, long-term hazard Category 1
OSHA defined hazards Not classified.
Label elements

Signal word: Danger
Hazard statement
H301 Toxic if swallowed.
H331 Toxic if inhaled.
H373 May cause damage to organs through prolonged or repeated exposure.
H400 Very toxic to aquatic life.
H410 Very toxic to aquatic life with long lasting effects.
Precautionary statement:
Prevention
P260 Do not breathe dust/fume/gas/mist/vapors/spray.
P261 Avoid breathing dust.
P264 Wash thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
Response
P301+P310 If swallowed: Immediately call a poison center/doctor.
P304+P340+P311+P330+P391 If inhaled: Remove person to fresh air and keep comfortable for breathing. Call a poison center/doctor. Rinse mouth. Collect spillage.
Storage
P403 Store in a well-ventilated place.
P404 Keep container tightly closed.
P405 Store locked up.
Disposal
P501 Dispose of contents/container in accordance with local/regional/national/international regulations.

SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS

Magnesium Selenide (MgSe)
Cas number: 1313-04-8

SECTION 4. FIRST AID MEASURES

Inhalation
Remove victim to fresh air and keep at rest in a position comfortable for breathing. Oxygen or
artificial respiration if needed. Do not use mouth-to-mouth method if victim inhaled the substance.
Induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other
proper respiratory medical device. Call a POISON CENTER or doctor/physician.
Skin contact
Wash off with soap and water. Get medical attention if irritation develops and persists.
Eye contact
Do not rub eyes. Rinse with water. Get medical attention if irritation develops and persists.
Ingestion
Call a physician or poison control center immediately. Rinse mouth. Do not induce vomiting without advice from poison control center. If vomiting occurs, keep head low so that stomach content doesn't get into the lungs. Do not use mouth-to-mouth method if victim ingested the substance. Induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.
Most important symptoms/effects, acute and delayed
Prolonged exposure may cause chronic effects.
Indication of immediate medical attention and special treatment needed
Provide general supportive measures and treat symptomatically. Keep victim warm. Keep victim
under observation. Symptoms may be delayed.
General information
If you feel unwell, seek medical advice (show the label where possible). Ensure that medical
personnel are aware of the material(s) involved, and take precautions to protect themselves. Show
this safety data sheet to the doctor in attendance.

SECTION 5. FIREFIGHTING MEASURES

Suitable extinguishing media
Water fog. Foam. Dry chemical powder. Carbon dioxide (CO2).
Unsuitable extinguishing media
Do not use water jet as an extinguisher, as this will spread the fire.
Specific hazards arising from the chemical
During fire, gases hazardous to health may be formed.
Special protective equipment and precautions for firefighters
Self-contained breathing apparatus and full protective clothing must be worn in case of fire.
Fire fighting equipment/instructions
Move containers from fire area if you can do so without risk.
Specific methods
Use standard firefighting procedures and consider the hazards of other involved materials.
General fire hazards
No unusual fire or explosion hazards noted.

SECTION 6. ACCIDENTAL RELEASE MEASURES

Personal precautions, protective equipment and emergency procedures
Keep unnecessary personnel away. Keep people away from and upwind of spill/leak. Wear
appropriate protective equipment and clothing during clean-up. Avoid inhalation of dust. Ensure
adequate ventilation. Local authorities should be advised if significant spillages cannot be
contained. For personal protection, see section 8 of the SDS.
Methods and materials for containment and cleaning up
Avoid dispersal of dust in the air (i.e., clearing dust surfaces with compressed air). Prevent product
from entering drains. Stop the flow of material, if this is without risk.
Large Spills: Wet down with water and dike for later disposal. Shovel the material into waste
container. Cover with plastic sheet to prevent spreading. Absorb in vermiculite, dry sand or earth
and place into containers. Following product recovery, flush area with water.
Small Spills: Sweep up or vacuum up spillage and collect in suitable container for disposal. Wipe
up with absorbent material (e.g. cloth, fleece). Clean surface thoroughly to remove residual
contamination.
Environmental precautions
Avoid release to the environment. Inform appropriate managerial or supervisory personnel of all
environmental releases. Prevent further leakage or spillage if safe to do so. Avoid discharge into
drains, water courses or onto the ground.

SECTION 7. HANDLING AND STORAGE

Precautions for safe handling
Minimize dust generation and accumulation. Avoid breathing dust. Avoid prolonged exposure. Do
not taste or swallow. When using, do not eat, drink or smoke. Use only outdoors or in a
well-ventilated area. Wear appropriate personal protective equipment. Wash hands thoroughly
after handling. Avoid release to the environment. Observe good industrial hygiene practices.
Conditions for safe storage, including any incompatibilities
Store locked up. Store in original tightly closed container. Store in a well-ventilated place. Store
away from incompatible materials

SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION

Appropriate engineering controls
Good general ventilation (typically 10 air changes per hour) should be used. Ventilation rates
should be matched to conditions. If applicable, use process enclosures, local exhaust ventilation,
or other engineering controls to maintain airborne levels below recommended exposure limits. If
exposure limits have not been established, maintain airborne levels to an acceptable level.
Control parameters
Follow standard monitoring procedures.
Individual protection measures, such as personal protective equipment
Eye/face protection If contact is likely, safety glasses with side shields are recommended.
Skin protection/Hand protection
Wear appropriate chemical resistant gloves. Suitable gloves can be recommended by the glove
supplier.
Other
Wear suitable protective clothing. Use of an impervious apron is recommended.
Respiratory protection
In case of insufficient ventilation, wear suitable respiratory equipment.
Thermal hazards
Wear appropriate thermal protective clothing, when necessary.
General hygiene considerations
Keep away from food and drink. Always observe good personal hygiene measures, such as
washing after handling the material and before eating, drinking, and/or smoking.

SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES

Information on basic physical and chemical properties
General Information
Appearance:
Form: Solid
Color: Not determined.
Odor: Not determined.
Odor threshold: Not determined.
pH-value: Not applicable.
Change in condition
Melting point/Melting range: Not determined.
Boiling point/Boiling range: Not determined.
Sublimation temperature / start: Not determined
Flammability (solid, gaseous): Not determined.
Ignition temperature: Not determined
Decomposition temperature: Not determined
Auto igniting: Not determined.
Explosion limits:
Lower: Not determined
Upper: Not determined
Vapor pressure: < 0.0000001 kPa at 25 °C
Relative density: Not determined.
Vapor density: Not applicable.
Evaporation rate: Not applicable.
Solubility in / Miscibility with Water: Not determined
Partition coefficient (n-octanol/water): Not determined.
Viscosity:
dynamic: Not applicable.
kinematic: Not applicable.
Other information
No further relevant information available.

SECTION 10. STABILITY AND REACTIVITY

Reactivity
The product is stable and non-reactive under normal conditions of use, storage and transport.
Chemical stability
Material is stable under normal conditions.
Possibility of hazardous reactions
Hazardous polymerization does not occur.
Conditions to avoid
Contact with incompatible materials.
Incompatible materials
Strong oxidizing agents.
Hazardous decomposition products
No hazardous decomposition products are known.

SECTION 11. TOXICOLOGICAL INFORMATION

Information on toxicological effects
Acute toxicity
No data available
Dermal: No data available
No data available
Skin corrosion/irritation
No data available
Serious eye damage/eye irritation
No data available
Respiratory or skin sensitisation
No data available
Germ cell mutagenicity
No data available
Carcinogenicity
IARC:
3-Group 3: Not classifiable as to its carcinogenicity to humans
NTP:
No component of this product present at levels greater than or equal to 0.1% is identified as a
known or anticipated carcinogen by NTP.
OSHA:
No component of this product present at levels greater than or equal to 0.1% is identified as a
carcinogen or potential carcinogen by OSHA.
Reproductive toxicity
No data available
No data available
Specific target organ toxicity -single exposure
No data available
Specific target organ toxicity -repeated exposure
May cause damage to organs through prolonged or repeated exposure.
Aspiration hazard
No data available
Additional Information
RTECS: Not available
Acute selenium poisoning produces central nervous system effects, which include nervousness, convulsions, and drowsiness. Other signs of intoxication can include skin eruptions, lassitude, gastrointestinal distress, teeth that are discolored or decayed, odorous ("garlic") breath, and partial loss of hair and nails. Chronic exposure by inhalation can produce symptoms that include pallor, coating of the tongue, anemia, irritation of the mucosa, lumbar pain, liver and spleen damage, as well as any of the other previously mentioned symptoms. Chronic contact with selenium
compounds may cause garlic odor of breath and sweat, dermatitis, and moderate emotional instability., To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.
Stomach-Irregularities-Based on Human Evidence
Stomach-Irregularities-Based on Human Evidence

SECTION 12. ECOLOGICAL INFORMATION

Toxicity
No data available
Persistence and degradability
No data available
Bioaccumulative potential
No data available
Mobility in soil
No data available
Results of PBT and vPvB assessment
PBT/vPvB assessment not available as chemical safety assessment not required/not conducted
Other adverse effects
An environmental hazard cannot be excluded in the event of unprofessional handling or disposal.
Very toxic to aquatic life with long lasting effects.

SECTION 13. DISPOSAL CONSIDERATIONS

Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company.
Contact a licensed professional waste disposal service to dispose of this material.
Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber.
Contaminated packaging
Dispose of as unused product.

SECTION 14. TRANSPORT INFORMATION

DOT (US)
UN number: 3283
Class: 6.1
Packing group: III
Proper shipping name: Selenium compound, solid, n.o.s.(Magnesium selenide)
Marine pollutant: yes
Poison Inhalation Hazard: No
IMDG
UN number: 3283
Class: 6.1
Packing group: III
EMS-No: F-A, S-A
Proper shipping name: SELENIUM COMPOUND, SOLID, N.O.S.(Magnesium selenide)
Marine pollutant: yes
IATA
UN number: 3283
Class: 6.1
Packing group: III
Proper shipping name: Selenium compound, solid, n.o.s.(Magnesium selenide)

SECTION 15. REGULATORY INFORMATION

SARA 302 Components
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.
SARA 313 Components
The following components are subject to reporting levels established by SARA Title III, Section 313:
Magnesium selenide
SARA 311/312 Hazards
Acute Health Hazard, Chronic Health Hazard
Massachusetts Right To Know Components
No components are subject to the Massachusetts Right to Know Act.
Pennsylvania Right To Know Components
Magnesium selenide
New Jersey Right To Know Components
Magnesium selenide
California Prop. 65 Components
This product does not contain any chemicals known to State of California to cause cancer, birth defects, or any other reproductive harm.