216 River Street
Suite 200
Troy, New York 12180
phone: (518) 273-6266
fax: (518) 273-6267
http://www.evidenttech.com
CdSe/ZnS Core Shell EviDots in Toluene
MSDS
Section 1 - Chemical Product
Product Family #: CdSe/ZnS Core Shell EviDots
Substance: Core Shell EviDots packed in Toluene
Trade Names/Synonyms: Core Shell EviDots
Matrix: aromatic hydrocarbon
Chemical Family: Nanocrystal: IV-VI semiconductor compound
Section 2 - Composition, Information on Ingredients
Component CAS# EC# % By Weight
Toluene 108-88-3 203-625-9 ~ 99.9
Cadmium Selenide (as nano-
1306-24-7 215-148-3 < 0.1
crystal compound)
Zinc Sulfide (as nanocrystal
1314-98-3 215-251-3 < 0.1
compound)
Section 3 - Hazards Identification
Hazard Description: Toxic, Dangerous to the Environment
NFPA Rating: Health = 2 Fire = 3 Reactivity = 0
Emergency Overview
Color: Yellow-brown
Physical Form: Liquid
Odor: Distinct aromatic odor
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MSDS Emergency Overview
Respiratory tract irritation, skin irritation, eye irritation, aspiration hazard, central nervous
Major Health Hazards: system depression, nerve damage.
Physical Hazards: Flammable
Potential Health Effects
Irritation, nausea, headache, drowsiness, dizziness, disorientation, sleep disturbances, loss
Inhalation: of coordination, dilated pupils, kidney damage and liver damage
Skin Contact: Irritation
Eye Contact: Irritation
Nausea, stomach pain, headache, drowsiness, dizziness, disorientation, sleep disturbanc-
Ingestion: es, loss of coordination, dilated pupils, kidney damage, liver damage, aspiration hazard.
Carcinogen Status: Toluene Cadmium Compounds Selenium Compounds
OSHA: No Yes No
NTP: No Yes No
IARC: No Yes No
Section 4 - First Aid Measures
If inhaled, remove to fresh air. If not breathing give artificial respiration and seek medical
Inhalation: attention.
Wash skin with soap and water for at least 15 minutes while removing contaminated per-
Skin Contact: sonal protective equipment, clothing and shoes. Seek medical attention if needed.
Eye Contact: Irrigate eyes for at least 15 minutes. Seek medical attention.
Ingestion: If ingested, do not induce vomiting, seek medical attention immediately.
Section 5 - Fire Fighting Measures
Extinguishing Media: Dry chemical, carbon dioxide and foam extinguisher
Fire Fighting: Avoid Inhalation of material or combustion by-products
Flash Point: 39F (4C) (closed cup)
Flammable Limits: 1.2% LEL -7.1% UEL
Autoignition Point: 896 F (480 C)
Flammability Class: OSHA Class IB
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MSDS Section 6 - Accidental Release Measures
Utilize personal protective equipment as described in section 8 and absorb with spill pillow or other
Small Spills: non-combustible material. Collect spilled material in appropriate container for disposal.
Section 7 - Handling and Storage
Use good hygienic work practices and wash hands after use. Store in a tightly closed container. Store in
a cool dry place.
Section 8 - Engineering Controls & Personal Protective Equipment
Exposure Limits
200ppm OSHA TWA PEL
300ppm ceiling OSHA
50ppm ACGIH TWA (skin)
Toluene 100ppm (375 mg/m3 ) NIOSH TWA 10hour
190mg/m3 DFG MAK
50ppm (191 mg/m3 ) UK OES TWA
5 ug/m3 OSHA TWA (metal and compounds)
2.5 ug/m3 OSHA action level (metal and compounds)
0.2 mg/m3 OSHA TWA (dust) (where cadmium standard 1910.1027 is not in effect)
0.6 mg/m3 OSHA ceiling (dust) (where cadmium standard 1910.1027 is not in effect)
Cadmium Compounds (as Cd): 0.01 mg/m3 ACGIH TWA (compounds and metal)
0.002 mg/m3 ACGIH TWA (respirable particulate, compounds and metal)
0.015 mg/m3 AGS TRK (inhalable dust fraction) (others)
0.025 mg/m3 UK MEL TWA (metal and compounds)
0.2 mg/m3 OSHA TWA
0.2 mg/m3 ACGIH TWA
0.2 mg/m3 NIOSH recommended TWA 10 hour(s)
Selenium Compounds (as Se): 0.05 mg/m3 DFG MAK (peak limitation category - II, with excursion factor of 4) (inhalable
dust fraction) (metal and inorganic compounds)
0.1 mg(Se)/m3 UK OES TWA
Zinc Sulfide 15mg/m3 OSHA TWA (particulates not otherwise regulated)
Provide local exhaust ventilation system or work in a chemical fume hood. Considerations
should be made for the use of non-sparking or intrinsically safe ventilation systems and
Ventiliation: equipment if explosive concentrations of material are present. Ensure compliance with ap-
plicable exposure limits.
Wear safety glasses with side shields as a minimum level of protection. If splash or splatter
is possible, wear chemical/splash resistant safety goggles and or face shield. Emergency
Eye Protection: eye wash station and quick drench shower should be provided in the immediate work area
as per the ANSI Z358.1 guidelines.
Clothing: Wear appropriate chemical resistant clothing.
Wear appropriate chemical resistant gloves for type of exposure. (polyvinyl alcohol, Tef-
Gloves: lon鈩? and Viton鈩? are resistant to toluene exposure)
Refer to 29CFR1910.134 for selection of appropriate respiratory protection. Organic vapor
cartridge with a 陆 or full face mask, where toluene vapors do not exceed the assigned
Respirator: protection factor for the respirator. For unknown concentrations or IDLH atmospheres wear
self-contained breathing apparatus or supplied air with escape bottle.
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MSDS Section 9 - Physical & Chemical Properties
Cadmium Selenide Core EviDots in Toluene
Physical State: liquid
Color: Yellow-brown
Odor: distinct aromatic odor
Odor Threshold: ~10-15 ppm
Molecular Weight: 92.14
Boiling Point: 232F (111 C)
Freezing Point: -139 F (-95 C)
Vapor Pressure: 22mmHg @20C
Vapor Density ( air = 1 ): 3.14
Specific Gravity ( water = 1 ): 0.8669
pH: No data available
Section 10 - Reactivity
Stability: Stable at standard temperatures and pressure.
Conditions to avoid: Avoid heat, sparks and other sources of ignition.
Incompatible with oxidizing materials, halogens, acids, com-
Incompatible: bustible materials and metal salts
Hazards Decomposition: Combustion produces toxic by-products.
Polymerization: Will not polymerize.
Section 11 - Toxicological Information
Toluene
300 ppm eyes-human; 435 mg skin-rabbit mild; 500 mg skin-rabbit moderate; 20mg/
Irritation Data: 24hours skin-rabbit moderate
719ul/kg oral-man LDLo; 50 mg/kg oral-human LDLo; 200 ppm inhalation-human TCLo;
100 ppm inhalation-man TCLo; 636 mg/kg oral-rat LD50; 49 gm/m3/4 hours inhalation-rat
LC50; 1332 mg/kg intraperitoneal-rat LD50; 1960 mg/kg intravenous-rat LD50; 6900 mg/kg
Toxicity Data: unreported-rat LD50; 400 ppm/24hours inhalation-mouse LC50; 59 mg/kg intraperitoneal-
mouse LD50; 2250 mg/kg subcutaneous-mouse LD50; 2gm/kg unreported-mouse LD50;
14100ul/kg skin-rabbit LD50; 130mg/kg intravenous-rabbit LDLo; 1600 ppm inhalation-
guinea pig LCLo
Local Effects: Irritant; inhalation, skin, eye
Slightly Toxic: Inhalation & dermal absorption
Moderately Toxic: Ingestion
Target Organs: Nervous system
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MSDS Cadmium Compounds
Exposure to sufficiently high concentrations of cadmium dusts may result in upper respiratory
tract irritation with delayed symptoms of cough, sore throat, wheezing, headache, chest pain,
Acute Inhalation: dizziness, abdominal pain, nausea, diarrhea and vomiting. Exposure may also cause sweating,
chills, and difficulty in breathing. Severe exposures may result in lung, kidney or liver damage
or death from massive pulmonary edema.
Cadmium is highly cumulative and respiratory effects from repeated or prolonged exposure to
dusts or fumes may include rhinitis, bronchitis, emphysema, cough, dyspnea, abnormal lung
function, obstructive disease, and possibly fibrosis. Ulceration of the nasal septum and yellow
discoloration of the teeth may occur. Cadmium induced kidney damage is irreversible and
may progress after exposure ceases; some cases of progression to kidney failure have been
described. Osteomalacia, osteoporosis, and spontaneous and pseudofractures may occur and
Chronic Inhalation: may be manifested as back pain , pain in the extremities, difficulty in walking, and pain on bone
pressure. Other effects may include irritability, weight loss, fatigue, mild to moderate anemia,
eosinophilia, damage to the olfactory nerve with anosmia, and liver damage. An epidemiologi-
cal study suggests a relationship between cadmium levels in air and cardiovascular disease,
but a causal association has not been proved. Occupational exposure to cadmium is implicated
in a significant increase in the incidence of prostatic and respiratory cancers.
The persistent vomiting induced by cadmium compounds may limit the amount retained, but if
sufficient amounts are absorbed, symptoms of systemic toxicity may begin within 15 minutes
to 2 hours. Salivation, choking, severe nausea, abdominal pain, diarrhea, tenesmus, blurred
vision, dizziness, headache, muscular cramps, exhaustion, collapse, shock, unconsciousness
Acute Ingestion of Cadmium
and rarely, convulsions may occur. Recovery may begin within 5-10 hours; sequelae may
Compounds: include delayed liver and kidney damage. Single doses of 10-20 mg of soluble cadmium salts
have induced severe toxic effects and doses above 300 mg may be fatal. Death due to shock
and dehydration may occur within 24 hours or may be delayed 7-14 days and be due to renal
failure or cardiopulmonary depression.
Chronic Ingestion of Cadmium Cadmium accumulates in the body and prolonged low level exposure may cause irreversible
renal tubular dysfunction and bone effects as described in the chronic inhalation section.
Compounds:
Selenium Compounds
May cause irritation and inflammation of the upper respiratory tract, redness of mucous
membranes, sneezing, coughing, sore throat, metallic taste in the mouth, and gastrointestinal
Acute Inhalation: distress. Exposure to high concentrations of fumes may cause dyspnea and possibly slight tra-
cheobronchitis. Central nervous effects may include frontal headaches, nervousness, convul-
sions, and death from respiratory depression.
Repeated or prolonged exposure may result in a metallic taste in the mouth followed by a garlic
odor of the breath and sweat. Other symptoms may include pallor, coated tongue, gastrointes-
Chronic Inhalation: tinal disturbances including nausea, vomiting, abdominal pain, diarrhea, weight loss, lumbar
pain, depression, lassitude, fatigue, giddiness, and emotional instability. Liver and spleen ef-
fects and albuminuria, porphyrinuria, and urobilinuria have also been reported.
Contact with selenium compounds may cause irritation, rashes and skin eruptions. Some com-
Acute Skin Exposure: pounds are strong vesicants and can cause destruction of skin and possibly burns.
Repeated or prolonged exposure to light dust concentrations of selenium compounds may
Chronic Skin Exposure: cause dermatitis, paronychia, and skin eruptions. Some selenium compounds are absorbed
through the skin and may result in effects as detailed in the inhalation section.
Ingestion may cause severe irritation and disturbances of the gastrointestinal tract, metallic
Acute Ingestion: taste in the mouth, tachycardia, chills, and central nervous system effects as detailed in acute
inhalation.
Repeated or prolonged ingestion may result in a metallic taste in the mouth, garlic odor of
breath and sweat, and other symptoms as described in chronic inhalation. Additional effects
reported from ingestion of food and water containing excessive amounts of selenium include
skin hyperpigmentation, nail changes, gingivitis, excess dental caries, malocclusion, weight
Chronic Ingestion: loss, vestibulotoxicity, amyotrophic lateral sclerosis, arthritis, problems walking, diminished
reflexes, substernal pain, disturbances of respiratory and endocrine function, jaundice, hepatic
disease, and socio-psychologic effects. In extreme cases, loss of nails and hair, numbness and
incoordination of arms and legs, paralysis, lack of mental alertness and death from respiratory
paralysis may occur.
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MSDS Selenium Compounds
To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.
Cadmium Selenide, in the form of a nanocrystal may or may not present the same health haz-
Additional toxicological infor-
ards as a larger cadmium or selenium containing molecules. It is therefore encouraged to use
mation: caution when handling this product as its toxicity and modes of exposure are not well charac-
terized or understood.
Zinc Sulfide
Oral Rat > 2,000 mg/kg LD50; Inhalation Rat > 5,040 mg/m3 LC50; Skin Rat> 2,000 mg/kg
Toxicity Data: LD50
Acute inhalation, skin and eye
Zinc Sulfide is an irritant to the eyes, respiratory system and skin.
toxicity:
Section 12 - Ecological Information
Do not allow material to be released to the environment (ground, air or water bodies) without proper
permits. Toluene is not persistent in the environment.
Section 13 - Transportation Information
U.S. DOT: Class 3, packing group II, UN1294
Canadian Transportation of Dangerous Goods: UN 1294 Class 3
Land Transport ADR/RID: UN1294, Class 3, Class Code F1, Pack group II
Air Transport IATA/ICAO: UN1294, Class or Division 3, pack group II
Exceptions: 49 CFR 173.4
Section 14 - Disposal
U.S. EPA 40 CFR 262: Hazardous Waste Number: D001 (Flammable), U220 (toluene)
Dispose in accordance with all applicable local, state and federal regulations.
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MSDS Section 15 - Regulatory Information
US Regulations
Toluene:
CERCLA: 1000 Lbs RQ
SARA Title III, sec. 302, 304: Not regulated
SARA Title III, Section 311/312
Acute: Yes
Chronic: Yes
Fire: No
Reactive: No
Sudden Release: No
US Inventory (TSCA) listed: Yes
Canadian Regulations
WHMIS Classification: Not available
European Regulations
EC Classification:
F Highly Flammable
Xn-Harmful
EC Risk Phrases
R11, R20, S2, S16, S25, S29, S33
Section 16 - Other 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. Evident Technologies shall not be held liable for any damage resulting
from handling or from contact with the above product. See packing slip for additional terms and
conditions of sale.
Revision Date: 1/1/05
Creation Date: 1/1/05
216 River Street
Suite 200
Troy, New York 12180
phone: (518) 273-6266
fax: (518) 273-6267
http://www.evidenttech.com
January 2005 - CdSe/ZdS Core Shell EviDots MSDS v1.0 Page:
漏 2005 Evident Technologies, Inc. All specifications subject to change without notice
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