Product: 655-456 Prentox庐 Diazinon 50W
Material Safety Data Sheet
U.S. Department of Labor (OSHA 29 CFR 1910.1200)
Manufacturer's Name: Prentiss Incorporated
C. B. 2000
Floral Park, NY 11001
Telephone Number: (516) 326-1919
Section 1: Chemical Identification
Product: 655-456 Prentox庐 Diazinon 50W
EPA Signal Word: CAUTION
Active Ingredient (%): Diazinon (50.0%) (CAS # 333-41-5)
Chemical Name: O,O-diethyl-O-(2-isopropyl-6-methyl-4-pyrimidinyl)-phosphorothioate
Chemical Class: Organophosphate Insecticide
Section 2: Composition/Information on Ingredients
OSHA ACGIH NTP/IARC/OSHA
Material: PEL TLV Other Carcinogen
0.1 mg/m3 (Skin) 0.1 mg/m3 (Skin)
Diazinon (50.0%) Not Est. No
Surfactant Not Established Not Established Not Est. No
5 mg/M3 (Resp. Dust) 10 mg/M3 (Total Dust) 15 mg/M3
Carrier No
(Total Dust)
15 mg/M3
Dispersing Agent Not Established Not Established No
(Total Dust)
Sodium Sulfite Not Established Not Established Not Established IARC, 3
5 mg/M3 (Resp. Dust) 10 mg/M3 (Total Dust) Not Established
Buffering Agent No
15 mg/M3 (Total Dust)
Section 3: Hazards Identification
Symptoms of Acute Exposure
Symptoms of cholinesterase inhibition can include headache, dizziness, blurred vision, weakness, nausea,
cramps, diarrhea, discomfort in the chest, nervousness, sweating, miosis (pinpoint pupils), tearing,
salivation, pulmonary edema, uncontrollable muscle twitches, convulsions, coma, and loss of reflexes and
sphincter control. If swallowed and aspirated into lungs, chemical pneumonia may result. Eye and skin
contact can cause irritation.
Hazardous Decomposition Products
None known.
Physical Properties
Appearance: Light brown powder.
Odor: Slight sulfur-like
Unusual Fire, Explosion and Reactivity Hazards
Thermal decomposition products include, but are not limited to, various aliphatic organophosphates,
substituted pyrimidines, and hydrogen cyanide.
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Product: 655-456 Prentox庐 Diazinon 50W
Section 4: First Aid Measures
If poisoning is suspected, immediately contact a physician, the nearest hospital or the nearest Poison
Control Center. Tell the person contacted the complete product name, and the type and amount of
exposure. Describe any symptoms and follow the advice given.
Ingestion: If victim is fully conscious, immediately give a large quantity of water to drink and induce
vomiting. Repeat until vomit fluid is clear. Never give anything by mouth to an unconscious person.
Avoid contact with contaminated skin or clothing - wear rubber gloves.
Eye Contact: Immediately rinse eyes with a large amount of running water. Hold eyelids apart to rinse
the entire surface of the eyes and lids. Do not apply any medicating agents except on the advice of a
physician.
Skin Contact: Wash with plenty of soap and water, including hair and under fingernails. Do not apply
any medicating agents except on the advice of a physician. Remove contaminated clothing and
decontaminate prior to use.
Inhalation: Move victim from contaminated area to fresh air. Apply artificial respiration if necessary,
preferably by mechanical means. Avoid mouth to mouth resuscitation.
Notes to Physician
This product is an organophosphate (cholinesterase inhibiting) insecticide. Atropine is antidotal and
should be given i.v. in multiple doses as necessary until the patient is atropinized. In severe cases, 2-
PAM may be given provided therapy begins within 24 hours of exposure.
Monitor serum and RBC cholinesterase. Morphine, theophylline, aminophylline, phenothiazines,
reserpine, furosemide or ethacrynic acid are contraindicated in organophosphate poisonings. Administer
i.v. fluids cautiously if needed to correct dehydration.
Medical condition likely to be aggravated by exposure
Exposure to cholinesterase inhibitors should be restricted in persons with hemolytic anemias or pre-
existing cholinesterase depression. Individuals with pre-existing respiratory disorders should use extra
care in handling this product.
Section 5: Fire Fighting Measures
Fire and Explosion
Flash Point (Test Method): Not applicable.
Flammable Limits (% in air): Lower: N/A Upper: N/A
Autoignition Temperature: >400oC
Flammability: Not flammable (DOT 49CFR 173.124)
Unusual Fire, Explosion and Reactivity Hazards
Thermal decomposition products include, but are not limited to, various aliphatic organophosphates,
substituted pyrimidines and hydrogen cyanide.
In case of Fire
Use dry chemical, foam or CO2 extinguishing media. Wear full protective clothing and self-contained
breathing apparatus. Evacuate nonessential personnel from the area to prevent human exposure to fire,
smoke, fumes or products of combustion. Prevent use of contaminated buildings, area and equipment
until decontaminated.
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Product: 655-456 Prentox庐 Diazinon 50W
Section 6: Accidental Release Measures
In case of spill or leak: Wear chemical safety glasses with side shields or chemical goggles, rubber
gloves, rubber boots, long-sleeved shirt, long pants, head covering, and a NIOSH approved dust or
pesticide respirator with a dust pre-filter. For small spills, sweep up, keeping dust to a minimum, and
place in an approved chemical container. Wash the spill area with water containing a strong detergent,
absorb with pet litter or other absorbent material, sweep up and place in a chemical container. Seal the
container and handle in an approved manner. Flush the area with water to remove any residue. Do not
allow wash water to contaminate water supplies.
Section 7: Handling and Storage
Store the material in a well-ventilated, secure area, out of the reach of children and domestic animals. Do
not store food, beverages or tobacco products in the storage area. Prevent eating, drinking, tobacco
usage, and cosmetic application in areas where there is a potential for exposure to the material. Always
wash thoroughly after handling.
Section 8: Exposure Controls/Personal Protection
Ingestion: Prevent eating, drinking, tobacco usage and cosmetic application in areas where there is a
potential for exposure to the material. Always wash thoroughly after handling.
Eye Contact: To avoid eye contact, wear safety glasses with side shields or chemical goggles.
Skin Contact: To avoid skin contact, wear rubber gloves, rubber boots, long-sleeved shirt, long pants
and a head covering.
Inhalation: To avoid breathing dust, wear a NIOSH approved dust or pesticide respirator with a dust
pre-filter.
Applicators/Handlers: Please refer to product label for personal protective clothing/equipment.
Section 9: Physical and Chemical Properties
Appearance: Light brown powder.
Odor: Slight sulfur like.
Melting Point: Not available.
Boiling Point: Not applicable.
Specific Gravity/Density: 24 lb./cu. ft.
pH: 8-10 (1% solution in water)
60.0 mg/L @ 20oC (diazinon)
Solubility in water:
1.20E-02 Pa @ 25oC (diazinon)
Vapor Pressure:
Section 10: Stability and Reactivity
Reactivity:
Stability Stable
Hazardous Polymerization: Will not occur
Conditions to avoid: None known.
Hazardous Decomposition Products:
None known.
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Product: 655-456 Prentox庐 Diazinon 50W
Section 11: Toxicological Information
Acute Toxicity/Irritation Studies
Ingestion: Slightly toxic
Oral LD50 (Rat) 1,960 mg/kg body weight
Dermal: Slightly toxic
Dermal LD50 (Rabbit) >2,020 mg/kg body weight
Inhalation: Slightly toxic
Inhalation LC50 3 mg/L air 鈥? 4 hours
Eye Contact: Mildly irritating (Rabbit)
Skin Contact: Mildly irritating (Rabbit)
Skin Sensitization: Not a sensitizer (Guinea Pig)
Mutagenic Potential: Diazinon 鈥? none observed
Reproductive Hazard Potential: Diazinon 鈥? None observed
Chronic/Subchronic Toxicity Studies: Diazinon 鈥? Cholinesterase inhibition
Carcinogenic Potential: Diazinon 鈥? None observed
Other Toxicity Information: Not available
Toxicity of Other Components:
Buffering agent: Repeated exposure may cause conjunctivitis. Exposure can result in mild
irritation to mucous membranes, coughing, and shortness of breath. Contact can cause irritation
to eyes.
Carrier: Overexposure results in congestion and irritation of the throat, nasal passages and upper
respiratory system. Also may cause temporary irritation and inflamation to the eyes.
Dispersing agent: Exposure can result in eye, skin and respiratory tract irritation.
Surfactant: Exposure can result in mild irritation of the eyes and respiratory tract.
Target Organs:
Active Ingredients:
Diazinon Central nervous system
Inert Ingredients:
Buffering agent: Eyes and respiratory tract.
Carrier: Eyes and respiratory tract.
Dispersing agent: Eyes, skin and respiratory tract.
Surfactant: Eyes and respiratory tract.
Section 12: Ecological Information
Summary of Effects: Diazinon is highly toxic to birds and aquatic organisms. Avoid exposure to
waterfowl.
Eco-Acute Toxicity:
Diazinon Rainbow trout 96-hour LC50 1.8 mg AI/L
Bluegill sunfish 96-hour LC50 0.21 mg AI/L
Daphnia Magna 48-hour LC50 0.0011 mg AI/L
Bobwhite Quail Oral LD50 5.2 mg/kg
Mallard Duck Oral LD50 1.44 mg/kg
Bobwhite Quail 8 day dietary LC50 235 ppm
Mallard Duck 8 day dietary LC50 33 ppm
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Product: 655-456 Prentox庐 Diazinon 50W
Eco-Chronic Toxicity:
Diazinon Fish (Fathead Minnow) Early life stage MATC >0.092 and <0.17 mg/L
Invertebrate (Daphnia Magna) life cycle MATC >0.00017 and <0.00032 mg/L
Mallard reproduction NOEC 10 ppm (ChE inhib., <5ppm)
Bobwhite reproduction NOEC 40 ppm (ChE inhib., <10ppm)
Environmental Fate:Diazinon 鈥? No data available on the formulation. The information presented here
is for the active ingredient, diazinon. A thorough review of environmental information is not possible in
this document. For additional information, contact Syngenta Crop Protection, Inc. at 1-800-334-9481.
Environmental Persistence/Mobility: Degrades rapidly in water, in the dark at pH 5 (t1/2 = 12
days), more slowly at pH 7 and 9 (t1/2 = 138 days and 77 days, respectively. Degrades more
rapidly in the light, in soil (t1/2 = 2.5 days) than in water (t1/2 ~ 25 days @ pH 7). Degrades
under aerobic and anaerobic conditions (t1/2 ~ 31-34 days). Mobility varies from very slight,
depending on the soil type (Koc = 25 to 2300). Some bioaccumulation in fish (BCF = 500X,
whole fish).
Section 13: Disposal Considerations
Disposal: Do not reuse product containers. Dispose of product containers, waste containers, and
residues according to Federal, State and local health and environmental regulations.
Characteristic Waste: Not applicable.
Listed Waste: Not applicable.
Section 14: Transport Information
DOT Classification: RQ, ENVIRONMENTALLY HAZARDOUS SUBSTANCES, SOLID,
N.O.S. (DIAZINON), UN3077, PGIII
B/L Freight Classification: INSECTICIDES; OTHER THAN POISON NMFC ITEM 102120
Section 15: Regulatory Information
SARA Title III Classification:
Section 311/312: Acute Health Hazard
Chronic Health Hazard
Section 313 chemicals:
Diazinon (50%) (CAS # 333-41-5)
This product contains a toxic chemical or chemicals subject to the reporting requirements of
Section 313 of Title III and of 40 CFR 372. Any copies or redistribution of this MSDS must
include this notice.
Proposition 65: Not applicable
CERCLA Reportable Quantity (RQ): 2 pounds
RCRA Classification: Not applicable.
TSCA Status: Exempt from TSCA
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Product: 655-456 Prentox庐 Diazinon 50W
Section 16: Other Information
NFPA Hazard Ratings:
Health 1 0 Least
Flammability 0 1 Slight
Reactivity 0 2 Moderate
3 High
4 Severe
Date Prepared: December 5, 2002
Supersedes: May 17, 1999
Reason: Revise Sections 2, 12, 16.
____________________________________________________________________________________
The information and recommendations contained herein are based upon data believed to be
correct. However, no guarantee or warranty of any kind, expressed or implied, is made with
respect to the information contained herein.
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