CdSe/ZnS Nanocrystals in Water MSDS

1. PRODUCT IDENTIFICATION
CAS No.: 1306-24-7 (CdSe), 1314-98-3 (ZnS)
Inorganic Unit (CdSe): 191.371
Chemical Name: Cadmium Selenide/Zinc Sulfide Core/Shell Nanocrystals
Chemical Formula: CdSe/ZnS
Chemical Family: II-VI Compounds
Typical Solvents (CAS No): Toluene (108-88-3), Hexanes (110-54-3), Chloroform (67-66-3),
Dichloromethane (75-09-2), Methanol (67-56-1), Water

2. COMPOSITION/INFORMATION ON INGREDIENT (EACH VIAL)

Substance Name	CAS #	Percentage of Whole (by weight)
CdSe	1306-24-7	1.5%
ZnS	1314-98-3	1.5%
Water		95%
Mercaptoundecanoic Acid	71310-21-9	2.0%

3. HAZARDS IDENTIFICATION
Harmful by inhalation, in contact with skin, and if swallowed.

4. FIRST AID MEASURES
Inhalation: Supply fresh air. If required, provide artificial respiration. Keep patient warm. Seek immediate
medical advice.
Skin contact: Immediately wash with water and soap and rinse thoroughly. Seek immediate medical advice.
Eye contact: Rinse opened eye for several minutes under running water. Then consult a doctor.
Ingestion: Seek immediate medical advice.

5. FIRE FIGHTING MEASURES
Suitable extinguishing agents: Product is not flammable.
Protective equipment: Wear self-contained respirator. Wear fully protective impervious suit.

6. ACCIDENTAL RELEASE MEASURES
Person-related safety precautions: Wear protective equipment. Keep unprotected persons away. Ensure
adequate ventilation
Measures for environmental protection: Do not allow material to be released to the environment without
proper governmental permits.
Measures for cleaning/collecting: Dispose contaminated material as waste according to item 12. Ensure
adequateventilation.

7. HANDLING AND STORAGE
EInformation for safe handling: Keep container tightly sealed. Store in cool(2-10℃), dry, and dark place in
tightly closed containers. Ensure good ventilation at the workplace. Store dissolved in solvent to prevent the
formation of dust.
Information about protection against explosions and fires: None
Requirements to be met by storerooms and receptacles: No special requirements.
Information about storage in one common storage facility: Do not store together with acids.
Further information about storage conditions: Keep container tightly sealed. Store in cool, dry, and dark
conditions in well sealed containers.

8. EXPOSURE CONTROLS AND PERSONAL PROTECTION
Additional information about design of technical systems: Properly operating chemical fume hood
designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.
General protective and hygienic measures: The usual precautionary measures for handling chemicals should
be followed. Keep away from foodstuffs, beverages, and feed. Remove all soiled and contaminated clothing
immediately. Wash hands before breaks and at the end of work. Avoid contact with the eyes and skin.
Breathing equipment: Use suitable respirator when high concentrations are present.
Protection of hands: Impervious gloves
Eye protection: Safety glasses
Body protection: Protective work clothing.

9. PHYSICAL AND CHEMICAL PROPERTIES:
Form: Liquid form. Crystalline powder, dissolved in a solvent
Color: Clear/Yellow - Red/Brown
Odor: Crystalline powder is odorless
Melting point/Melting range: ~400℃ to bulk melting point of CdSe crystals. The solvent is liquid and melting
point depends on the chemical composition of the solvent.
Boiling point/Boiling range: Determined by solvent used
Sublimation temperature / start: approx. 1150℃
Flash point: Dependent upon solvent used
Ignition temperature: Dependent upon solvent used
Decomposition temperature: Not determined
Danger of explosion: Dependent upon solvent used. Crystalline powder does not present an explosion
hazard.
Explosion limits: Currently unknown for nanocrystals
Vapor pressure: Dependent upon solvent used
Density: 5.81 g/cm3 (crystal at 20℃) for the nanocrystal powder if isolated
Solubility in / Miscibility with Polar Solvents: Soluble when hydrophilic ligands are present
Solubility in / Miscibility with Non-Polar Solvents: Soluble when hydrophobic ligands are present

10. STABILITY AND REACTIVITY
Thermal decomposition / conditions to be avoided: Not determined, but temperature should remain low to
maintain their full optical properties.
Materials to be avoided: Acids, Bases, Oxidants, Redutants, and Ligands to the nanocrystals should be used
with caution.
Dangerous reactions: No dangerous reactions known

11. TOXICOLOGICAL INFORMATION
Skin: Irritant to skin and mucous membranes.
Eye: Irritating effect.
Sensitization: No sensitizing effects known.
Additional toxicological information: Danger through skin absorption.
To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.
Target Organs: Lungs, Liver, Kidneys
EPA-B1: Probable human carcinogen, limited evidence of carcinogenicity from epidemiologic studies.
IARC-1: Carcinogenic to humans: sufficient evidence of carcinogenicity.
NTP-2: Reasonably anticipated to be a carcinogen: limited evidence from studies in humans or sufficient evidence
from studies in experimental animals. Carcinogen as defined by OSHA.
ACGIH A2: Suspected human carcinogen: Agent is carcinogenic in experimental animals at dose levels, by
route(s) of administration, at site(s), of histologic type(s), or by mechanism(s) considered relevant to worker
exposure. Available epidemiologic studies are conflicting or insufficient to confirm an increased risk of cancer
in exposed humans.
WARNING: Many of the toxic effects of CdSe nanocrystals are still being researched and are currently unknown
at this point. Use at own risk.

12. ECOLOGICAL INFORMATION:
Do not allow material to be released to the environment without proper governmental permits.

13. DISPOSAL CONSIDERATIONS
Consult local or national regulations for proper disposal.

14. TRANSPORT INFORMATION
U.S. DOT 49 CFR 172.101ID Number: UN2570
Hazard class: 6.1
Packing Group: III
Labeling Requirements: None when shipped in small quantities
Canadian Transportation of Dangerous Goods: UN2570, Class 6.1
Land Transport ADR/RID: UN2570, Class 6.1, Class Code F1, Pack group III
Air Transport IATA/ICAO: UN2570, Class or Division 6.1, Pack group III
Exceptions: 49 CFR 173.4

15. REGULATIONS
Hazard symbols: Xn Harmful
Risk phrases: 20/21/22 Harmful by inhalation, in contact with skin and if swallowed.
Safety phrases: 22 Do not breathe dust or vapors.
National regulations: All components of this product are listed in the U.S. Environmental Protection Agency Toxic
Substances Control Act Chemical Substance Inventory.
Information about limitation of use: For use only by technically qualified individuals.