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 in Polymethyl
Methacrylate Toluene Solution
MSDS
Section 1 - Chemical Product
Product Family #: CdSe-PMMA
Toluene and poly(methylmethacrylate) (PMMA) with
Substance: Cadmium Selenide nanocrystal compound
Trade Names/Synonyms: Core/Shell Evidots in PMMA and Toluene
Matrix: hydrocarbon, aromatic
Chemical Family: Nanocrystal: II-VI semiconductor compound
Section 2 - Composition, Information on Ingredients
Component CAS# EC# % By Weight
Toluene 108-88-3 203-625-9 85-95
Polymethyl methacrylate
9011-14-7 none 5-15
(PMMA)
Cadmium Selenide (as nano-
1306-24-7 215-148-3 ~ 1-3
crystal 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
Respiratory tract irritation, skin irritation, eye irritation, aspiration hazard, central nervous
Major Health Hazards: system depression, nerve damage.
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MSDS Emergency Overview
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, cancer.
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 PMMA
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
Inhalation: respiration and seek medical attention.
Wash skin with soap and water for at least 15 minutes while
Skin Contact: removing contaminated personal protective equipment,
clothing and shoes. Seek medical attention if needed.
Eye Contact: Irrigate eyes for at least 15 minutes. Seek medical attention.
If ingested, do not induce vomiting, seek medical attention
Ingestion: 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 sec-
tion 8 and absorb with spill pillow or other non-combustible
Small Spills: 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
PMMA No personal exposure limits established
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
Provide local exhaust ventilation system or work in a chemi-
cal fume hood. Considerations should be made for the use
Ventiliation: of non-sparking or intrinsically safe ventilation systems and
equipment if explosive concentrations of material are pres-
ent. Ensure compliance with applicable 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. Emer-
Eye Protection: gency 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.
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MSDS Wear appropriate chemical resistant gloves for type of ex-
Gloves: posure. (polyvinyl alcohol, Teflon鈩? and Viton鈩? gloves 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
Respirator: assigned protection factor for the respirator. For unknown
concentrations or IDLH atmospheres wear self-contained
breathing apparatus or supplied air with escape bottle.
Section 9 - Physical & Chemical Properties
Cadmium Selenide Core Shell EviDots in Toluene and PMMA
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.
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MSDS 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
Cadmium Compounds
Exposure to sufficiently high concentrations of cadmium dusts may result in upper respira-
tory tract irritation with delayed symptoms of cough, sore throat, wheezing, headache,
Acute Inhalation: chest pain, 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 irrevers-
ible and may progress after exposure ceases; some cases of progression to kidney failure
have been described. Osteomalacia, osteoporosis, and spontaneous and pseudofractures
Chronic Inhalation: may occur and may be manifested as back pain, pain in the extremities, difficulty in walk-
ing, 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 epidemiological study suggests a relationship between cadmium levels in
air and cardiovascular disease, but a causal association has not been proved. Occupation-
al 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, tenes-
mus, blurred vision, dizziness, headache, muscular cramps, exhaustion, collapse, shock,
Acute Ingestion of Cadmium Com-
unconsciousness and rarely, convulsions may occur. Recovery may begin within 5-10
pounds: hours; sequelae may 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.
Cadmium accumulates in the body and prolonged low level exposure may cause irre-
Chronic Ingestion of Cadmium
versible renal tubular dysfunction and bone effects as described in the chronic inhalation
Compounds: section.
Moderately Toxic: Ingestion
Target Organs: Nervous system
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 gastrointes-
Acute Inhalation: tinal distress. Exposure to high concentrations of fumes may cause dyspnea and possibly
slight tracheobronchitis. Central nervous effects may include frontal headaches, nervous-
ness, convulsions, and death from respiratory depression.
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MSDS Selenium Compounds
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,
gastrointestinal disturbances including nausea, vomiting, abdominal pain, diarrhea, weight
Chronic Inhalation: loss, lumbar pain, depression, lassitude, fatigue, giddiness, and emotional instability.
Liver and spleen effects and albuminuria, porphyrinuria, and urobilinuria have also been
reported.
Contact with selenium compounds may cause irritation, rashes and skin eruptions. Some
Acute Skin Exposure: compounds are strong vesicants and can cause destruction of skin and possibly burns.
Repeated or prolonged exposure to light dust concentrations of selenium compounds
Chronic Skin Exposure: may 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 ef-
fects reported from ingestion of food and water containing excessive amounts of selenium
include skin hyperpigmentation, nail changes, gingivitis, excess dental caries, maloc-
Chronic Ingestion: clusion, weight 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.
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
Additional toxicological information: health hazards as a larger cadmium or selenium containing molecules. It is therefore en-
couraged to use caution when handling this product as its toxicity and modes of exposure
are not well characterized or understood.
PMMA
No significant adverse effects are known. In solid form, may cause irritation when inhaled
Health effects: or ingested or with eye and skin contact. No data available for chronic or acute effects.
To the best of our knowledge the acute and chronic toxicity of this substance is not fully
known. Cadmium Telluride or Cadmium Selenide in the form of a nanocrystal may or may
Additional toxicological information: not present the same health hazards as a larger Cadmium, Tellurium or Selenium contain-
ing molecules. It is therefore encouraged to use caution when handling this product as its
toxicity and modes of exposure are not well characterized or understood.
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MSDS 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.
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
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MSDS 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: 1/6/2005
Creation Date: 3/10/2004
216 River Street
Suite 200
Troy, New York 12180
phone: (518) 273-6266
fax: (518) 273-6267
http://www.evidenttech.com
January 2005 - CdTe / CdSe / polymethyl methacrylate Core Shell MSDS v1.0 Page:
漏 2005 Evident Technologies, Inc. All specifications subject to change without notice
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