AMVAC CHEMICAL CORPORATION Page 1 of 8
DACTHAL?W-75 Herbicide;
DACTHAL?W-75 Turf AMVAC MSDS No.: 291_7
MATERIAL SAFETY DATA SHEET
1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
PRODUCT NAME: DACTHAL?W-75 Herbicide; DACTHAL?W-75 Turf
GENERAL USE: Herbicide
PRODUCT DESCRIPTION: Fine off-white (gray) to tan powder
EPA Registration Number: 5481-490; 5481-491
Agriculture Canada Reg. No.: 8963
MSDS No.: 291_7
Current Revision Date: 31 January, 2007
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- 75% 1861-32-1
dicarboxylate; Chlorthal-dimethyl; DCPA; TCTP; Dimethyl
tetrachloroterephthalate)
Related Compounds 25%
OSHA HAZARDOUS COMPONENTS (29 CFR1910.1200)
COMPONENT HAZARD OSHA PEL* ACGIH TLV*
Chlorthal-dimethyl Poison (by
(CAS # 1861-32-1) Intravenous route)
15 mg/m3, total dust; 10 mg/m3
Amorphous Silicon Nuisance dust
5 mg/m3, respirable dust
dioxide (inhalation)
3 mg/m3 (respirable)
(CAS # 63231-67-4)
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
AMVAC CHEMICAL CORPORATION Page 2 of 8
DACTHAL?W-75 Herbicide;
DACTHAL?W-75 Turf AMVAC MSDS No.: 291_7
3. HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW:
CAUTION: Harmful if swallowed. Avoid inhaling dust. This product may
cause skin and eye irritation. Do not contaminate feed or foodstuffs.
KEEP PESTICIDES OUT OF REACH OF CHILDREN.
POTENTIAL HEALTH EFFECTS
ROUTE(S) OF ENTRY: Ingestion, inhalation, skin and eye contact.
SIGNS OF ACUTE OVEREXPOSURE: May be a slight skin and 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 human 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?W-75 Herbicide;
DACTHAL?W-75 Turf AMVAC MSDS No.: 291_7
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: None
Upper flammable limit: None
Flammability: This is a noncombustible solid 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: Keep spill from spreading.
SMALL or LARGE SPILL: Sweep up or vacuum the product into a secure container for reuse or
disposal.
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DACTHAL?W-75 Herbicide;
DACTHAL?W-75 Turf AMVAC MSDS No.: 291_7
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: Solid
APPEARANCE: Fine off-white (gray) to tan powder
ODOR: Slightly aromatic odor
ODOR THRESHOLD: Not available
BOILING POINT: Decomposes at 360-370/C
FREEZING/MELTING POINT: 156/C (313/F) (based on a.i.)
0.25 g/cm3
BULK DENSITY:
0.21 mPa (2.5 x 10-6 torr) @ 25/C (gas saturation
VAPOR PRESSURE:
method)
VAPOR DENSITY: Heavier than air
PERCENT VOLATILE BY VOL: Not applicable
SOLUBILITY IN WATER: Disperses
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DACTHAL?W-75 Herbicide;
DACTHAL?W-75 Turf AMVAC MSDS No.: 291_7
9. PHYSICAL AND CHEMICAL PROPERTIES, cont'd
SOLUBILITY (Other): The active ingredient in this product is soluble in
aromatic hydrocarbons, chlorinated hydrocarbons,
ketones, and esters.
1.9 x 104 @ 25/C (a.i.)
PARTITION COEFFICIENT (O/W):
pH (use levels): 7 to 8
EVAPORATION RATE: Not applicable
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/C)
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
INGESTION: Oral LD50 (rat): > 10000 mg/kg (Toxicity Category IV)
DERMAL: Skin LD50 (rabbit): > 10000 mg/kg (Toxicity Category IV)
INHALATION: Inhalation LC50 (rat): >5.7 mg/L (Toxicity Category IV)
IRRITATION: Eye irritation(rabbit): Minimal Irritant (Toxicity Category IV)
Skin irritation: Non-irritating (Toxicity Category IV)
(rabbit)
SENSITIZATION: Skin sensitization It is not a sensitizer
(guinea pig)
TERATOGENICITY: No data are available on this product. Tests carried out on Technical
DACTHAL?have shown no evidence of teratogenicity.
MUTAGENICITY: No data are available on this product. Tests carried out on Technical
DACTHAL?have shown no evidence of mutagenicity in laboratory testing.
CARCINOGENICITY: A contaminant in Technical 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 human carcinogen, based on increased incidence
of thyroid tumors in both sexes of the rat and liver tumors in female rats and mice.
REPRODUCTIVE TOXICITY: No data are available on this product. Tests carried out on Technical
DACTHAL?have shown no effects on reproductive performance; only decreased pup and
parental body weights were seen throughout two successive generations in the rat.
TOXICOLOGICALLY SYNERGISTIC PRODUCTS: No data available
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DACTHAL?W-75 Herbicide;
DACTHAL?W-75 Turf AMVAC MSDS No.: 291_7
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: Tetrachloroterephthalic 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: Completely empty bag into mixing equipment. Then dispose of empty
bag in a sanitary landfill or by incineration, or, if allowed by State and local authorities, by
burning. If burned, stay out of smoke. Check with EPA, State, and local authorities for the
current regulations applicable to your area.
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: 4 lb bags (6/box), 24 lb bags (2/box), 25 kg bags, 400
kg and 750 lb bulk bags
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DACTHAL?W-75 Herbicide;
DACTHAL?W-75 Turf AMVAC MSDS No.: 291_7
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.
CANADIAN REGULATIONS: This product is registered under the Pest Control Product Act of
Canada. It is a violation of Canadian Law to use this product in any manner inconsistent with
its labeling. Read and follow all label directions.
This product has been classified according to the hazard criteria of the CPR and the MSDS
contains all the information required by the CPR.
EUROPEAN UNION REGULATIONS: This product is registered in the European Union. It is a
violation of European Union regulations to use any product in any manner inconsistent with
its labeling.
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.
16. OTHER INFORMATION
MSDS Status:
Date This Revision: 31 January, 2007
Date Previous Revision: 12 May, 2004
Person Responsible for Preparation: Gary A. Braden
Reasons for Revision: Annual Review. Changes were made in sections 1 and 9 to give consistent
descriptions in the two areas, and changes were made in section 11 to update the
toxicological data to reflect current knowledge.
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DACTHAL?W-75 Herbicide;
DACTHAL?W-75 Turf AMVAC MSDS No.: 291_7
16. OTHER INFORMATION, cont'd
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
OSHA - Occupational Safety and Health Agency
SARA - Superfund Amendments and Reauthorization Act
TSCA - Toxic Substances Control Act
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