LEAD ARSENATE
- CAS No.
- 7784-40-9
- Chemical Name:
- LEAD ARSENATE
- Synonyms
- gypsine;arsinette;schultenite;caswellno525;orthol40dust;LEAD ARSENATE;arsenateoflead;natschultenite;acidleadarsenate;leadacidarsenate
- CBNumber:
- CB0763062
- Molecular Formula:
- AsHO4Pb
- Molecular Weight:
- 347.13
- MOL File:
- 7784-40-9.mol
- Modify Date:
- 2023/10/17 17:11:55
| 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 |
| CAS DataBase Reference | 7784-40-9 |
| EPA Substance Registry System | Lead(II) arsenate (1:1) (7784-40-9) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS06,GHS08,GHS09 |
|---|---|
| Signal word | Danger |
| Hazard statements | H301-H331-H350-H360Df-H373-H410 |
| Precautionary statements | P264-P270-P301+P310-P321-P330-P405-P501-P261-P271-P304+P340-P311-P321-P403+P233-P405-P501-P260-P314-P501-P273-P391-P501 |
| Hazard Codes | T,N |
| Risk Statements | 45-61-23/25-33-50/53-62 |
| Safety Statements | 53-45-60-61 |
| RIDADR | 1617 |
| HazardClass | 6.1 |
| PackingGroup | II |
| HS Code | 28429090 |
| Toxicity | LD50 in rats, rabbits (mg/kg): 825, 125 orally (Voigt); LD50 in female rats (mg/kg): 1050 orally, >2400 dermally (Gaines) |
LEAD ARSENATE Chemical Properties,Uses,Production
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.
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
Lead arsenate [Pb3(AsO4)4] is a toxic commercial insecticide and herbicide.
Production Methods
Lead arsenate is produced mainly from lead acetate, lead nitrate, and lead oxide and disodium arsenate.The direct reaction of arsenic acid with litharge in the presence of nitric acid gives a dilead arsenate. Com mercial lead arsenates contain mostly PbHAsO4 along with varying amounts of Pb3(AsO4)2. Accordingly, their lead content is higher and their As2O3 content lower than the levels calculated for PbHAsO4.
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
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
LEAD ARSENATE Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| Triveni chemicals | 08048762458 | New Delhi, India | 6093 | 58 | Inquiry |
| Central Drug House(P) Ltd. | 91-11-49404040 | New Delhi, India | 6160 | 58 | Inquiry |
| SUZHOU SENFEIDA CHEMICAL CO.,LTD | +86-0512-83500002 +8615195660023 | China | 23053 | 58 | Inquiry |
| Shaanxi DIDU pharmaceutical and Chemical Co., Ltd | 17691182729 18161915376 | China | 10011 | 58 | Inquiry |
| Nantong Zhonghe Chemical New Materials Co., Ltd | 13003551299 13003551299 | China | 7567 | 58 | Inquiry |
| City Chemicals Corporation | 800-248-2436 | United States | 6462 | 72 | Inquiry |
| Pfaltz & Bauer, Inc. | (800) 225-5172 | United States | 6830 | 72 | Inquiry |
| NILE CHEMICALS | 91-22-56313162 | United States | 1370 | 61 | Inquiry |
| Service Chemical Inc. | 888-895-6920 | Germany | 6373 | 71 | Inquiry |