Product: 655-779 Prentox庐 Resmethrin 0.5%
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 11002-2000
Telephone Number: (516) 326-1919
Section 1: Chemical Identification
Product: 655-779 Prentox庐 Resmethrin 0.5%
EPA Signal Word: CAUTION
Active Ingredient (% W/W): Resmethrin (0.5%) (CAS # 10453-86-8)
Chemical Name: [5-(phenylmethyl)-3-furanyl] methyl, 2-2-dimethyl-3-(2-methyl-1-propenyl)
cyclopropanecarboxylate
Chemical Class: Pyrethroid Insecticide mixture
Section 2: Composition/Information on Ingredients
OSHA ACGIH NTP/IARC/OSHA
Material: PEL TLV Other Carcinogen
Resmethrin (0.5%) N/A N/A N/A No
Petroleum solvent (96.8%) (TWA) 300 ppm*
(CAS # 64742-47-8) *Supplier recommendation
Co-solvent (0.625%) N/A N/A N/A No
(Identity and CAS# confidential)
Food Grade Vegetable Oil (2.0%) (Identity trade secret) No
Perfume (0.075%) (CAS# N/A) N/A N/A N/A No
Section 3: Hazards Identification
Routes of Exposure: Skin contact, inhalation and ingestion.
Signs and Symptoms of Overexposure: Runny nose, sneezing, and scratchy throat from inhalation may
be experienced by some individuals.
Health Hazards (Acute and Chronic): Resmethrin causes slight skin irritation and is harmful if
swallowed. Solvent may irritate eyes, and upon frequent of prolonged contact, be moderately irritating to
skin, and cause dermatitis. Inhalation of solvent may cause nasal and respiratory irritation, and central
nervous system effects, including headaches, dizziness, weakness, fatigue, nausea, possible
unconsciousness, and even death. Ingestion of solvent may cause gastrointestinal irritation, nausea,
vomiting and diarrhea. Aspiration into the lungs may cause chemical pneumonitis, which can be fatal.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide.
Section 4: First Aid Measures
If swallowed, call a physician or Poison Control Center immediately. Do not induce vomiting. Vomiting
may cause aspiration pneumonia.
If inhaled, remove victim to fresh air.
If on skin, remove contaminated clothing and wash affected areas with soap and water.
If in eyes, flush eyes with plenty of water. Call a physician immediately if irritation persists.
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Product: 655-779 Prentox庐 Resmethrin 0.5%
Section 5: Fire Fighting Measures
153-167o F. (Closed cup)
Flash Point (Method Used):
Flammable Limits: LEL: 1.3 UEL: 8.8 (solvent - approximate)
Approximately 640o F.
Autoignition Temperature (solvent):
NFPA Hazard Ratings: Health: 1 Flammability: 2 Reactivity: 1
Extinguishing Media: CO2, foam, or dry chemical.
Special Fire Fighting Procedures: Do not inhale vapor. Use self-contained, positive pressure breathing
apparatus and protective clothing. Keep unnecessary personnel away. Use water spray or fog to cool
containers. Do not allow runoff to enter sewer systems or any body of water. This product is toxic to
fish, birds and other wildlife, prevent spread of contaminated runoff. Do not decontaminate personnel,
equipment or handle broken packages or containers without wearing the specified protective equipment
and clothing. Decontaminate emergency personnel with soap and water before leaving the fire area.
Unusual Fire and Explosion Hazards: Combustible liquid, solvent can form combustible mixtures at
temperatures at or above the flash point. Solvent can also accumulate static charges, which can cause an
incendiary electrical discharge. 鈥淓mpty鈥? containers retain product residues (liquid and/or vapors), and
can be dangerous. DO NOT pressurize, cut, weld, braze, solder, drill, grind or expose such containers to
heat, flame, sparks, static electricity, or other sources of ignition, as they may explode and cause injury or
death.
Section 6: Accidental Release Measures
Cover the spilled area with generous amounts of absorbent material, such as clay, diatomaceous earth,
sand or sawdust. Sweep the contaminated absorbent onto a shovel and put the sweepings into a salvage
drum. Waste disposal method: Wastes resulting from the use of this product may be disposed of on site
or at an approved waste disposal facility. Container disposal: Triple rinse (or equivalent). Puncture and
dispose of in a sanitary landfill, or by incineration, or, if allowed by State and local authorities, burning. If
burned, stay out of smoke.
Section 7: Handling and Storage
Handling Precautions: Do not use near heat or open flame. Avoid contact with pesticide and wear
protective equipment to prevent contact with the product or its vapors.
Storage Precautions: Store away from heat and open flame. Do not store at temperatures below 40o F.
If this material is exposed to temperatures below 40o F., there may be precipitation of the active
ingredient out of solution. Check for crystallization. If evident, warm to 80o F. and thoroughly mix
before using. Exposure to temperatures above 130o F. may cause bursting. Keep out of reach of
children, domestic animals and pets. Do not contaminate water, food or feed by storage or disposal.
Other precautions: Periodically inspect stored materials.
Section 8: Exposure Controls/Personal Protection
Respiratory protection: Not required. Avoid inhalation of vapors.
Ventilation:
Local Exhaust: As required to meet TLV.
Special: Not applicable.
Mechanical; As required to meet TLV.
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Product: 655-779 Prentox庐 Resmethrin 0.5%
Other: Not applicable.
Protective Gloves: Chemical resistant during mixing/loading operations recommended.
Eye Protection: Face shield, safety glasses or goggles during mixing/loading operations recommended.
Other protective clothing or equipment: Wear long pants, long sleeved shirt or other body covering
clothes. Avoid skin or eye contact.
Work/Hygienic practices: Wash thoroughly after handling and before eating or smoking.
Section 9: Physical and Chemical Properties
Appearance: Faint amber liquid.
Odor: Mild woody odor.
Boiling Point: N/D
Specific Gravity (H2O = 1): 0.7874-0.8058
2.58 @ 200o C. (Resmethrin Technical)
Vapor Pressure (mmHg):
113o F. (45 o C.) (Resmethrin Technical)
Melting Point:
Vapor Density (Air = 1): N/D
3.13-4.80 @ 24 o C.
Viscosity (Centipoise):
Evaporation Rate (Butyl Acetate = 1): N/D
Solubility in Water: Virtually insoluble.
Section 10: Stability and Reactivity
Stability: Stable under normal storage conditions.
Conditions to avoid for stability: Light, excessive heat and sources of ignition.
Incompatibility: Strong oxidizing and reducing agents.
Hazardous Decomposition or Byproducts: Carbon monoxide and carbon dioxide.
Hazardous Polymerization: Will not occur.
Conditions to avoid for Hazardous Polymerization: None.
Section 11: Toxicological Information
The following results are for Resmethrin Technical (85%):
Acute studies: Exposure levels tested in animals at or near the LD50 or LC50 have produced the
following symptomology: decreased locomotion, tremors, salivation and erect body hair.
Acute Oral Effects:
LD50 (male rat) >5,050 mg/Kg
LD50 (female rat) 2,150 mg/Kg
Acute Inhalation Effects:
4-hour LC50 >9.49 mg/l
1 hour equivalent LC50 >37.96 mg/l (for USDOT purposes)
Skin Effects:
Absorption: LD50 >2,020 mg/Kg
Subchronic (Target Organ Effects): The NOEL established for resmethrin in a 90-day inhalation study
was 0.1 g/M3. The NOEL was 10 mg/Kg/day when dogs were fed diets containing resmethrin for 180
days.
Chronic (Cancer) Information: NTP, IARC and OSHA do not list Resmethrin as a carcinogen.
Resmethrin did not produce any evidence of toxic effects when fed to rats at concentrations of up to 500
ppm for two years. Resmethrin was not considered to be oncogenic based on chronic feeding studies
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Product: 655-779 Prentox庐 Resmethrin 0.5%
conducted in rats and mice. Resmethrin is not considered to be teratogenic based on studies conducted in
rabbits and rats.
Reproductive and Developmental Toxicity: A slight increase in the number of pups cast dead and a
decrease in pup weights were observed when rats were fed diets containing 500 ppm (lowest dosage
tested) or higher of resmethrin over three successive generations.
Neurotoxicity: Resmethrin is not considered to be a neurotoxin based on rat feeding studies conducted
for up to 32 weeks.
Mutagenicity (Genetic Effects): Resmethrin is not considered to be mutagenic based on in vitro studies
conducted with bacteria and yeast.
Section 12: Ecological Information
The following results are for Resmethrin Technical (85%):
Acute and long-term toxicity to fish and invertebrates:
The LC50 of resmethrin in rainbow trout is 2.4 碌g/l or 2.4 ppb. The LC50 of resmethrin in bluegill sunfish
is 8.75 ppb. The LC50 of resmethrin in goldfish is 28 ppb. (after aging 72 hours, water containing 250
ppb of resmethrin resulted in zero mortality).
Three applications of resmethrin at 0.10 pounds actual insecticide per acre applied at two-week intervals
caused no mortality to fish, even where concentrations reached a maximum of 7.3 ppb in test pools.
Under similar conditions using approximately 0.04 pounds per acre, or 7.3 ppb of actual insecticide in
water, resulted in no mortality to grass shrimp.
Acute and dietary toxicity to birds:
The acute oral LD50 of resmethrin in male California quail was in excess of 2,000 mg/Kg.
The LC50 of resmethrin fed to Japanese quail in their diet was >5,000 ppm.
Dietary administration of resmethrin at 300 ppm for 23 weeks produced no adverse effects on
reproduction in Bobwhite quail and in Mallard ducks.
Other environmental information:
This product is highly toxic to fish. Do not discharge effluent containing this product into lakes, streams,
ponds, estuaries, oceans or public waters unless in accordance with requirements of a National Pollutant
Discharge Elimination System (NPDES) permit and the permitting authority has been notified in writing
prior to discharge. Do not discharge effluent containing this product into sewer systems without
previously notifying the sewage treatment plant authority. For guidance, contact your State Water Board
or Regional Office of the EPA.
Section 13: Disposal Considerations
Waste disposal method: Wastes resulting from the use of this product may be disposed of on site or at
an approved waste disposal facility. Container disposal: Triple rinse (or equivalent). Puncture and
dispose of in a sanitary landfill, or by incineration, or, if allowed by State and local authorities, burning. If
burned, stay out of smoke.
Characteristic Waste: Ignitable.
Listed Waste: N/A.
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Product: 655-779 Prentox庐 Resmethrin 0.5%
Section 14: Transport Information
DOT Classification: Not regulated.
B/L Freight Classification: INSECTICIDES; OTHER THAN POISON, NMFC ITEM 102120,
CLASS 60.
International Transportation: Not regulated.
Section 15: Regulatory Information
SARA Title III Classification:
Section 311/312: Acute health hazard
Fire hazard
Section 313 chemicals:
Resmethrin (0.5%) (CAS # 10453-86-8)
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: Yes.
CERCLA Reportable Quantity (RQ): N/A.
RCRA Classification: N/A.
TSCA Status: Exempt from TSCA as regulated under FIFRA.
Section 16: Other Information
NFPA Hazard Ratings:
Health 1 0 Least
Flammability 2 1 Slight
Reactivity 0 2 Moderate
3 High
4 Severe
Date Prepared: November 18, 1999
Supersedes: September 9, 1999
Reason: Revision of sections 7, 11, 15
____________________________________________________________________________________
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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