| Identification | More | [Name]
Dacthal | [CAS]
1861-32-1 | [Synonyms]
2,3,5,6-TETRACHLOROTEREPHTHALIC ACID DIMETHYL ESTER
CHLORTHAL
CHLORTHAL-DIMETHYL
CHLORTHAL-METHYL
CHLORTHAL-METHYL(R)
DAC 893(R)
DACTHAL
DACTHAL(R)
DCPA METHYL ESTER(R)
DIMETHYL-2,3,5,6-TETRACHLOROTEREPHTHALATE
DIMETHYL TETRACHLOROTEREPHTHALATE
FATAL(R)
LABOTEST-BB LT00455685
RID(R)
TCTP
TETRACHLOROTEREPHTHALIC ACID DIMETHYL ESTER
TIMTEC-BB SBB007929
1,4-Benzenedicarboxylic acid, 2,3,5,6-tetrachloro-, dimethyl ester
1,4-benzenedicarboxylicacid,2,3,5,6-tetrachloro,dimethylester
1,4-Benzenedicarboxylicacid,2,3,5,6-tetrachloro-,dimethylester | [EINECS(EC#)]
217-464-7 | [Molecular Formula]
C10H6Cl4O4 | [MDL Number]
MFCD00014902 | [Molecular Weight]
331.96 | [MOL File]
1861-32-1.mol |
| Hazard Information | Back Directory | [Potential Exposure]
DCPA is an alkyl phthalate; benzene-
dicarboxylic acid herbicide, pesticide pre-emergent herbi-
cide is used on annual broadleaf weeds and grasses
in a wide spectrum of vegetable crops. | [First aid]
Eyes: Speed in removing material from skin is
of extreme importance. Eye contact can cause dangerous
amounts of these chemicals to be quickly absorbed through the mucous membrane into the bloodstream. Directly,
irrigate with large amounts of plain, tepid water or saline
for 20 minutes, occasionally lifting the lower and upper
lids. During this time, remove contact lenses, if easily
removable without additional trauma to the eye. Get medi-
cal aid immediately. Have physician check for possible
delayed damage. Skin: Get medical aid. Skin and/or eye
contact can cause dangerous amounts of these chemicals to
be absorbed into the bloodstream. Wearing the appropriate
PPE equipment and respirator for organochlorine pesti-
cides, immediately flush exposed skin, hair, and under nails
with plain, running, tepid water for 20 minutes, then wash
twice with mild soap. Shampoo hair promptly if contami-
nated; protect eyes. Do not scrub skin or hair, since this
can increase absorption through the skin. Rinse thoroughly
with water. Victims who are able and cooperative
may assist with their own decontamination. Remove and
double-bag contaminated clothing and personal belongings.
Leather absorbs many organochlorines; therefore, items
such as leather shoes, gloves, and belts should be discarded.
If the skin is swollen or inflamed, cool affected areas with
cold compresses. Ingestion: Call poison control. Loosen all
clothing. Never give anything by mouth to an unconscious
person. Get medical aid. Do not induce vomiting.
In cases
of ingestion, the patient is at risk of CNS depression or
seizures, which may lead to pulmonary aspiration during
vomiting. If the victim is conscious and able to swallow,
administer an aqueous slurry of activated charcoal at
1 gm/kg (usual adult dose 60 90 g, child dose 25 50 g).
A soda can and straw may be of assistance when offering
charcoal to a child. The efficacy of activated charcoal for
some organochlorine poisoning (such as chlordane) is
uncertain. If victim is unconscious or having convulsions,
do nothing except keep victim warm.
In some cases you
may be specifically instructed by Poison Control to induce
vomiting by way of two tablespoons of syrup of ipecac
(adult) washed down with a cup of water. Do not give acti-
vated charcoal before or with ipecac syrup. Inhalation: Get
medical aid. Do not contaminate yourself. Wearing the
appropriate PPE equipment and respirator for organochlo-
rine pesticides, immediately remove the victim from the
contaminated area to fresh air. For inhalation exposures,
monitor for respiratory distress. If the victim is not breath-
ing, administer artificial respiration. Do not use mouth-to-
mouth method if victim ingested or inhaled the substance;
give artificial respiration with the aid of a pocket mask
equipped with a one-way valve or other proper respiratory
medical device. If cough or breathing difficulty develops,
evaluate for respiratory tract irritation, bronchitis, or
pneumonitis. If breathing is difficult, administer 100% humid-
ified supplemental oxygen through bag/mask apparatus until
medical help arrives. Do not leave victim unattended | [Shipping]
UN3077 Environmentally hazardous substances,
solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous
hazardous material, Technical Name Required. | [Incompatibilities]
May react violently with strong oxidi-
zers, bromine, 90% hydrogen peroxide, phosphorus
trichloride, silver powders or dust. Incompatible with silver
compounds. Mixture with some silver compounds forms
explosive salts of silver oxalate. | [Chemical Properties]
Colorless crystalline | [Chemical Properties]
Colorless to gray crystalline solid. Practically
odorless. | [Waste Disposal]
Incineration in a unit with
efficient gas scrubbing. Containers must be disposed of
properly by following package label directions or by con-
tacting your local or federal environmental control agency,
or by contacting your regional EPA office. | [Uses]
Pre-emergent herbicide. | [Uses]
Selective, nonsystemic, preemergent herbicide to control most annual grasses and
many broad-leaved weeds. | [Definition]
ChEBI: Dacthal is a diester and a methyl ester. | [Environmental Fate]
Soil. Bartha and Pramer (1967) reported that DCPA was degraded by soil microorganisms via cleavage of the herbicide molecule into propionic acid and 3,4-dichloroaniline.
The acid was mineralized to carbon dioxide and water and two molecules of 3,4-dichloroaniline were condensed to form 3,3′4,4′-tetrachloro-azobenzene. Metabolites identified
in soil and turfgrass thatch are monomethyl tetrachloroterephthalate and 2,3,5,6-tetrachloroterephthalic acid (Hartley and Kidd, 1987; Krause and Niemczyk, 1990). Residual
activity in soil and the half-life in soil were reported to be approximately 3 months (Hartley
and Kidd, 1987; Worthing and Hance, 1991) | [storage]
Store at -20°C, protect from light |
|
|