| Identification | Back Directory | [Name]
LEAD ARSENATE | [CAS]
7784-40-9 | [Synonyms]
gypsine
arsinette
schultenite
orthol40dust
caswellno525
LEAD ARSENATE
natschultenite
arsenateoflead
acidleadarsenate
leadacidarsenate
plumbousarsenate
leadarsenate,basic
dibasicleadarsenate
dileadorthoarsenate
lead arsenate (1:1)
standardleadarsenate
leadhydrogenarsenate
acidleadorthoarsenate
leadarsenate(standard)
diplumbichydrogenarsenate
Lead(II) hydrogenarsenate
Arsenicacidlead(2+)salt(1:1)
arsenicacid,lead(2+)salt(1:1)
epapesticidechemicalcode013503
Bisarsenenic acid lead(II) salt
Lead (arsenate of) ( in PbHAsO4)
Arsenic acid hydrogen lead(II) salt
arsenicacid(h3aso4),lead(2+)salt(1:1)
arsenicacid(h3aso4),lead(2++)salt(1:1) | [EINECS(EC#)]
232-064-2 | [Molecular Formula]
AsHO4Pb | [MDL Number]
MFCD00054015 | [MOL File]
7784-40-9.mol | [Molecular Weight]
347.13 |
| Chemical Properties | Back Directory | [Description]
Lead arsenate appears as odourless white heavy powder and practically is insoluble in water. It is not combustible and emits irritating or toxic fumes (or gases) in a fire. Lead arsenate is currently used as a growth regulator on grape fruit crop. A large bulk of lead arsenate is also used annually to control cockroaches, silverfish, crickets, earthworms, and other soil-inhabiting insects on golf greens and lawns and on airport turf adjoining runways to reduce bird hazard related to earthworm. Lead arsenate is quite stable and readily accumulates in soils either as a result of use in specific soil treatments or foliar application. Lead arsenate insecticide was used in many countries, including Australia, Canada, New Zealand, and the United States. It was used for insect pests on apples and other fruit tree, garden crops and turf grasses, on rubber and coffee trees, and for mosquito abatement in cattle dips. All insecticidal uses of lead arsenate in the United States were officially banned on August 1, 1988 (U.S. EPA, 1988), with a comment that all registrations for insecticidal use had lapsed before that date. In Australia, use of lead arsenate decreased after the introduction of DDT in 1950, and it has not been used on exported crops since 1983. | [Appearance]
Lead arsenate is an odorless, heavy, white
powder, or crystals. | [Melting point ]
decomposes at 1042℃ [HAW93] | [density ]
5.79 | [solubility ]
insoluble in H2O; soluble in HNO, alkaline solutions 3 | [form ]
white monoclinic crystals | [color ]
white monoclinic crystals, crystalline | [Water Solubility ]
insoluble H2O; soluble HNO3, alk [CRC10] | [Solubility Product Constant (Ksp)]
pKsp: 35.39 | [Uses]
Insecticide; veterinarian treatment as a teniacide and insecticide. | [CAS DataBase Reference]
7784-40-9 | [EPA Substance Registry System]
Lead(II) arsenate (1:1) (7784-40-9) |
| Hazard Information | Back Directory | [Chemical Properties]
Lead arsenate is an odorless, white, heavy powder. It is not combustible and emits irritating
or toxic fumes (or gases) in a fi re. Lead arsenate enters the body by inhalation, or from
contaminated food and beverages. It is used to make insecticides. | [Uses]
As constituent of various insecticides for larvae of gypsy moth, boll weevil, etc. | [Health Hazard]
Exposures to lead arsenate occur in work areas and it is absorbed into the body by inhalation
of its dust and by ingestion. It is irritating to the eyes, the skin, and the respiratory
tract, and causes adverse effects on the gastrointestinal tract, nervous system, kidneys,
liver, and blood. Accidental ingestion of lead arsenate in the workplace causes cough,
sore throat, abdominal pain, diarrhea, drowsiness, headache, nausea, vomiting, muscular
cramp, constipation, excitation, and disorientation in the worker. | [Potential Exposure]
Used as an insecticide, herbicide, and
in manufacture of drugs; veterinary tapeworm medicine.
Incompatibilities: Violent reactions occur from contact
with oxidizers, chemically active metals; strong acids.
Acids and acid mists cause the release of arsine, a deadly
gas. Decomposes above 270C forming toxic fumes including arsenic and lead compounds | [First aid]
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately
with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if
heart action has stopped. Transfer promptly to a medical
facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce
vomiting. Do not make an unconscious person vomit | [Shipping]
UN1617 Lead arsenates, Hazard Class: 6.1;
Labels: 6.1-Poisonous materials | [Incompatibilities]
Used as an insecticide, herbicide, and
in manufacture of drugs; veterinary tapeworm medicine.
Incompatibilities: Violent reactions occur from contact
with oxidizers, chemically active metals; strong acids.
Acids and acid mists cause the release of arsine, a deadly
gas. Decomposes above 270C forming toxic fumes including arsenic and lead compounds | [Waste Disposal]
Long- term storage in large,
weatherproof, and sift-proof storage bins or silos; may be
disposed of by conversion to soluble salt, such as chloride,
precipitation as sulfide and return to supplier | [Definition]
ChEBI: Lead arsenate is an inorganic lead salt composed from lead(2+) and arsenate dianion. It was widely used in the United States in the 1950's as an insecticide to control pests in fruit orchards, specifically apples and cherries. It has a role as an insecticide, a plant growth regulator and a rodenticide. It contains a lead(2+) and an arsenate(2-). |
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