AMVAC CHEMICAL CORPORATION Page 1 of 8
DACTHAL?FLOWABLE HERBICIDE AMVAC MSDS No.: 298_3
MATERIAL SAFETY DATA SHEET
1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
PRODUCT NAME: DACTHAL?FLOWABLE HERBICIDE
GENERAL USE: Herbicide
PRODUCT DESCRIPTION: Gray opaque viscous liquid suspension
EPA Registration Number: 5481-487
MSDS No.: 298_3
Current Revision Date: 10 August, 2005
MANUFACTURER: EMERGENCY TELEPHONE NUMBERS:
AMVAC CHEMICAL CORPORATION MANUFACTURER: 323-264-3910
4100 E. Washington Blvd. TRANSPORTATION (24 HOURS)
Los Angeles, CA 90023-4406 CHEMTREC: 800-424-9300
Ph: 323-264-3910 OTHER (24 HOURS)
FAX: 323-268-1028 AMVAC: 323-264-3910
2. COMPOSITION/INFORMATION ON INGREDIENTS
COMPONENT WT% CAS No.
DACTHAL?(Dimethyl 2,3,5,6-tetrachloro-1,4-benzene- 54.9% 1861-32-1
dicarboxylate; Chlorthal-dimethyl; DCPA; TCTP; Dimethyl
tetrachloroterephthalate)
Other Compounds 45.1%
OSHA HAZARDOUS COMPONENTS (29 CFR1910.1200)
COMPONENT HAZARD OSHA PEL* ACGIH TLV*
Chlorthal-dimethyl Poison (by Intravenous
(CAS # 1861-32-1) route)
0.002 mg/m3
Hexachlorobenzene(trace) Carcinogen
(CAS # 118-74-1)
* Exposure Limits 8 hrs. TWA
DACTHAL is a registered trademark of AMVAC Chemical Corporation
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DACTHAL?FLOWABLE HERBICIDE AMVAC MSDS No.: 298_3
3. HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW:
CAUTION: Harmful if swallowed. Avoid inhaling mist. This product may cause
skin and eye irritation. Do not contaminate feed or foodstuffs.
KEEP OUT OF REACH OF CHILDREN.
Slightly toxic to bees.
POTENTIAL HEALTH EFFECTS
ROUTE(S) OF ENTRY: Ingestion.
SIGNS OF ACUTE OVEREXPOSURE: May be a mild eye irritant. Ingestion may cause upset
stomach.
SIGNS OF CHRONIC OVEREXPOSURE: May show evidence of liver and thyroid gland toxicity.
OTHER POTENTIAL HEALTH EFFECTS: This product contains small amounts of
Hexachlorobenzene (HCB), which has been listed as a known carcinogen by IARC, NTP,
and the state of California. HCB has also been listed as a reproductive hazard by the state
of California. DACTHAL?has been classified by EPA as a possible carcinogen (Group C).
MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: None known.
CARE SHOULD BE EXERCISED IN HANDLING DACTHAL?AND ITS FORMULATIONS.
4. FIRST AID MEASURES
EYES: Immediately flush the eyes with copious amounts of clear, cool running water for a minimum of
15 minutes. Hold the eyelids apart during the flushing to ensure rinsing of the entire surface
of the eyes and lids with water. If irritation occurs and persists, contact a physician.
INHALATION: Avoid inhaling the dust. If symptoms of breathing difficulties appear, get the person
out of the contaminated area into fresh air.
INGESTION: Do not induce vomiting. If vomiting occurs spontaneously, keep airways clear. Never give
anything by mouth to an unconscious person. Contact a physician immediately.
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DACTHAL?FLOWABLE HERBICIDE AMVAC MSDS No.: 298_3
4. FIRST AID MEASURES, cont'd
SKIN: Remove contaminated clothing. Wash thoroughly with soap and clean water. If a rash or any
of the symptoms of acute exposure appear, contact a physician immediately.
NOTE TO PHYSICIANS: Treat symptomatically. AMVAC Chemical Corporation is available 24
hours/day to answer questions on this product. The telephone number is 1-323-264-3910.
5. FIRE FIGHTING MEASURES
FLAMMABLE PROPERTIES
Flash Point: Nonflammable
Autoignition Temperature: Not applicable
Flammable Limits:
Lower flammable limit: Not applicable
Upper flammable limit: Not applicable
Flammability: This is a noncombustible liquid that will burn or decompose when kept
directly in the flame (NFPA rating = 1)
EXPLOSIVITY
Mechanical Impact: Not explosive
Static Discharge: Will not occur
HAZARDOUS COMBUSTION PRODUCTS: This product may emit hazardous fumes of hydrogen
chloride, carbon oxides, and unidentified organic compounds when it is heated excessively
or burned. WEAR SELF-CONTAINED BREATHING APPARATUS.
EXTINGUISHING MEDIA: Water spray, dry chemical, foam, or carbon dioxide.
FIRE FIGHTING INSTRUCTIONS: Do not breathe fumes. Wear complete firefighting gear, including
protective gloves, eye protection and self-contained breathing apparatus. Wash clothing
before reuse.
6. ACCIDENTAL RELEASE MEASURES
GENERAL: Use impervious clothing and safety goggles. Keep bystanders away from the spill. Do not
walk in the spill. It may be very slippery. See Section 8 (Exposure Control/Personal
Protection) for more information.
SMALL SPILL: Cover with absorbent (clay, sawdust, straw, kitty litter, etc.), to absorb the liquid.
Sweep into an open drum. Clean the area with common powdered household detergent and
a stiff brush and just enough water to make a slurry. Absorb and sweep into the same open
drum. Rinse with water, absorb, and add to the waste drum. Close the drum and dispose of
properly.
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DACTHAL?FLOWABLE HERBICIDE AMVAC MSDS No.: 298_3
6. ACCIDENTAL RELEASE MEASURES, cont'd
LARGE SPILL: Dike the spill to prevent contamination of local water sources. Siphon the majority
of the liquid into drums for use or disposal, depending on the circumstances. Clean the area
as described for a small spill.
7. HANDLING AND STORAGE
HANDLING: Keep this product cool and dry. Keep container closed. Store away from feed, food,
and drink. Keep away from children and pets. Wash thoroughly after handling this product.
STORAGE: Store product in its original container in a cool, dry, locked place out of the reach of
children.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
ENGINEERING CONTROLS: Use process enclosures, local exhaust ventilation, or other engineering
controls to keep airborne levels below recommended exposure limits. If user operations
generate dust, fume or mist, use ventilation to keep exposure to airborne contaminants below
the exposure limit.
RESPIRATORY PROTECTION: A properly FIT-TESTED NIOSH/MSHA-approved respirator fitted
with organic vapor cartridges and dust filters is required when working with this product if
the ventilation is insufficient to keep exposure to dusts at a minimum.
SKIN PROTECTION: Applicators and other handlers must wear long-sleeved shirt and long pants;
waterproof gloves; and shoes plus socks. Follow manufacturer's instructions for cleaning/
maintaining personal protection equipment (PPE). If no such instructions are available, use
detergent and hot water. Keep and wash PPE separately from other laundry. Do not reuse
contaminated clothing until it has been laundered properly. Always wash hands, face and
arms with soap and water after using pesticides before smoking, eating, drinking or going to
the toilet. Shower after work each day.
EYE PROTECTION: Safety glasses with sideshields should be used whenever hazardous chemicals
are being handled.
9. PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Liquid
Appearance: Gray opaque viscous liquid suspension
Odor: Slightly aromatic odor
Odor Threshold: Not available
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DACTHAL?FLOWABLE HERBICIDE AMVAC MSDS No.: 298_3
9. PHYSICAL AND CHEMICAL PROPERTIES, cont'd
Boiling Point: 100癈
Freezing/melting point: -5癈
Specific gravity: 1.32 g/mL
Bulk Density: 11 lb/gal @ 20癈
0.21 mPa (2.5 x 10-6 torr) @ 25癈 (gas saturation method)
Vapor Pressure:
Vapor Density: Heavier than air
Percent Volatile by Vol: 41% (v/v)
Solubility in Water: Disperses
Solubility (Other): The active ingredient in this product is soluble in aromatic
hydrocarbons, chlorinated hydrocarbons, ketones, and esters.
1.9 x 104 @ 25癈 (a.i.)
Partition Coefficient (O/W):
pH (use levels): 6.5 to 8.5
Evaporation Rate: Not determined
10. STABILITY AND REACTIVITY
CHEMICAL STABILITY (Conditions to avoid): This product is stable under normal storage and use
conditions. It will decompose at elevated temperatures (360-370癈)
INCOMPATIBILITY: Strong acids and bases will decompose the ester functions of DACTHAL.
HAZARDOUS DECOMPOSITION PRODUCTS: This product may emit hazardous fumes of
hydrogen chloride, carbon oxides, and unidentified organic compounds when it is heated
excessively or burned. WEAR SELF-CONTAINED BREATHING APPARATUS when these
conditions are present.
HAZARDOUS POLYMERIZATION: This product will not polymerize.
11. TOXICOLOGICAL INFORMATION
Data presented are from testing on this product (1)or the technical material (2).
INGESTION: Oral LD50 (rat): > 5000 mg/kg (1)
DERMAL: Skin LD50 (rabbit): > 2000 mg/kg (1)
INHALATION: Inhalation LC50 (rat): > 2.08 mg/L (1)
IRRITATION: Eye irritation(rabbit): Slight, reversible irritant (1)
Skin irritation: Mild irritant (1)
(rabbit)
SENSITIZATION: Skin sensitization Technical material is not a sensitizer (2)
(guinea pig)
TERATOGENICITY: No evidence of teratogenicity has been observed in laboratory testing. (2)
MUTAGENICITY: No evidence of mutagenicity has been observed in animal testing. (2)
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DACTHAL?FLOWABLE HERBICIDE AMVAC MSDS No.: 298_3
11. TOXICOLOGICAL INFORMATION, cont'd
CARCINOGENICITY: A contaminant in DACTHAL? HCB, has been found to be carcinogenic
in several studies conducted for IARC and NTP. DACTHAL?has been classified by
EPA as a Group C, possible carcinogen, based on increased incidence of thyroid tumors
in both sexes of the rat and liver tumors in female rats and mice. (3)
REPRODUCTIVE TOXICITY: No effects on reproductive performance, only decreased pup and
parental body weights, were seen throughout two successive generations in the rat. (3). A
trace impurity, Hexachlorobenzene, has been classified as being a reproductive hazard by the
State of California.
TOXICOLOGICALLY SYNERGISTIC PRODUCTS: No data available
12. ECOLOGICAL INFORMATION
GENERAL: This pesticide is mildly toxic to some fish and aquatic organisms. Do not apply directly
to water, to areas where surface water is present, or to intertidal areas below the mean high
water mark. Do not apply directly adjacent to potable water supplies. This pesticide is
slightly toxic to honeybees.
Groundwater Advisory: Tetrachlorterephthalic acid, a breakdown product of DACTHAL? is known
to leach through soil as a result of agricultural and turf uses and has been found in
groundwater which may be used for drinking water. Users of formulated products are advised
not to apply DACTHAL?to sand and loamy sand soils where the water table (groundwater)
is close to the surface and where these soils are very permeable, i.e., well drained. Your local
agricultural agencies can provide further information on the type of soil in your area and the
location of groundwater used for drinking water.
13. DISPOSAL CONSIDERATIONS
PESTICIDE DISPOSAL: Wastes resulting from the use of this product may be disposed on site (by
use according to the label) or at an approved waste disposal facility. Further information can
be obtained from the EPA or the equivalent state and local agencies.
CONTAINER DISPOSAL: Triple rinse. Use the rinsate in the process according to the label, or
dispose as a hazardous waste. Either offer the container for recycle or puncture and dispose
as a hazardous waste. Check with EPA, State, and local authorities for the current regulations
applicable to your area.
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DACTHAL?FLOWABLE HERBICIDE AMVAC MSDS No.: 298_3
14. TRANSPORTATION INFORMATION
DOT Class: Not regulated
UN Number: Not applicable
IMDG Class (sea): Not regulated
IATA Class (air): Not regulated
Marine Pollutant: No
Packing Group: Not applicable
Hazard Label(s): None
ADR Class (Road): Not listed in ADR
Proper Shipping Name(s): Not applicable
Reportable Quantity: None
PACKAGING
General Description: 2 x 2.5 gal plastic bottles; 30 gal drums
15. REGULATORY INFORMATION
U.S. FEDERAL REGULATIONS:
This product is registered under EPA/FIFRA Regulations. It is a violation of Federal Law to
use this product in any manner inconsistent with its labeling. Read and follow all label
directions. This product is excluded from listing requirements under EPA/TSCA.
SARA TITLE III DATA
Section 311 & 312 Hazard Categories:
Immediate Health Hazard: Yes
Delayed Health Hazard: No
Fire Hazard: No
Reactive Hazard: No
Sudden Pressure Release Hazard: No
Section 302 Extremely Hazardous Substances: None
Section 313 Toxic Chemicals:
Hexachlorobenzene (HCB) (CAS 118-74-1)
CERCLA/EPCRA Reportable Quantities (RQ):
Hexachlorobenzene (HCB) (CAS 118-74-1) - 10 lbs; Product - 10000+ lbs
STATE REGULATIONS:
CALIFORNIA (Proposition 65): This product contains trace amounts of Hexachlorobenzene (HCB),
a chemical known to the State of California to cause cancer or birth defects or other
reproductive harm.
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DACTHAL?FLOWABLE HERBICIDE AMVAC MSDS No.: 298_3
16. OTHER INFORMATION
MSDS Status:
Date This Revision: 10 August, 2005
Date Previous Revision: 6 August 2003
Person Responsible for Preparation: Gary A. Braden
Reasons for Revision: Changes were made in sections 3, 6, and 11 in order to update information in
those sections or to make them easier to understand.
DISCLAIMER: This information is provided for the limited guidance to the user. While AMVAC
believes that the information is, as of the date hereof, reliable, it is the user's responsibility
to determine the suitability of the information for its purposes. The user is advised not to
construe the information as absolutely complete since additional information may be
necessary or desirable when particular, exceptional, or variable conditions or circumstances
exist (like combinations with other materials), or because of applicable regulations. No
express or implied warranty of merchantability or fitness for a particular purpose or otherwise
is made hereunder with respect to the information or the product to which the information
relates.
ABBREVIATIONS:
a.i. - active ingredient
ACGIH - American Conference of Governmental Industrial Hygienists
CERCLA - Comprehensive Environmental Response, Compensation, and Liability Act
DOT - Department of Transportation
EPA - Environmental Protection Agency
EPCRA - Emergency Planning and Community Right-to-Know Act
FIFRA - Federal Insecticide, Fungicide, and Rodenticide Act
IARC - International Agency for Research on Cancer
IATA - International Air Transport Association
IMDG - International Maritime Dangerous Goods
NTP - National Toxicology Program
SARA - Superfund Amendments and Reauthorization Act
TSCA - Toxic Substances Control Act
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