| Identification | More | [Name]
CALCIUM ARSENATE | [CAS]
7778-44-1 | [Synonyms]
CALCIUM ARSENATE
CALCIUM ORTHOARSENITE
ai3-24838
arseniatedecalcium
arseniatedecalcium(french)
arsenicacid(h3aso4),calciumsalt(2:3)
Arsenicacid,calciumsalt(2:3)
calciumarsenat
calciumarsenate(asas)
calciumarsenate(ca3(aso4)2)
calciumarsenate0
calciumarsenate000
calcium-o-arsenate
calciumorthoarsenate
caswellno137
chip-cal
chip-calgranular
cucumberdust
epapesticidechemicalcode013501
fencal | [EINECS(EC#)]
231-904-5 | [Molecular Formula]
As2Ca3O8 | [MDL Number]
MFCD00049407 | [Molecular Weight]
398.07 | [MOL File]
7778-44-1.mol |
| Chemical Properties | Back Directory | [Appearance]
White powder. Slightly soluble in water;
soluble in dilute acids. Decomposes on heating.
| [Melting point ]
1455℃ [CRC10] | [density ]
3,62 g/cm3 | [vapor pressure ]
0Pa at 20℃ | [RTECS ]
CG0830000 | [solubility ]
soluble in dilute acid solutions | [form ]
Powder | [color ]
White | [Specific Gravity]
3.62 | [Water Solubility ]
It is soluble in water and acids, insoluble in organic solvents | [Solubility Product Constant (Ksp)]
pKsp: 18.17 | [Exposure limits]
ACGIH: TWA 0.01 mg/m3
NIOSH: IDLH 5 mg/m3; Ceiling 0.002 mg/m3 | [CAS DataBase Reference]
7778-44-1(CAS DataBase Reference) | [EPA Substance Registry System]
Calcium arsenate (7778-44-1) |
| Hazard Information | Back Directory | [Chemical Properties]
White powder. Slightly soluble in water;
soluble in dilute acids. Decomposes on heating.
| [Uses]
Insecticide; molluscicide. | [General Description]
White powder. Slightly soluble in water. Toxic by inhalation and ingestion. Used as an insecticide and germicide. | [Reactivity Profile]
Has only weak oxidizing power but redox reactions can still occur. Soluble in dilute acids. [Hawley]. Produces toxic fumes of arsenic when heated to decomposition . | [Air & Water Reactions]
Slightly soluble in water. | [Hazard]
Toxic by ingestion and inhalation.
| [Health Hazard]
This material is extremely toxic; the probable oral lethal dose for humans is 5-50 mg/kg, or between 7 drops and 1 teaspoonful for a 150 lb. person. It is an irritant to eyes, respiratory tract, mouth and stomach. Damage to kidneys, liver and the nervous system have been reported. (Non-Specific--Arsenic) Chronic exposure can cause bone marrow damage, often leading to aplastic anemia. There is epidemiological evidence that chronic ingestion of arsenic compounds causes a predisposition to skin cancers. | [Fire Hazard]
Fire may produce irritating or poisonous gases. When heated to decomposition, CALCIUM ARSENATE(7778-44-1) produces toxic fumes of arsenic. Avoid heat. Hazardous polymerization may not occur. | [Description]
The calcium arsenate that is sold commercially today
as an insecticide is not a single chemical compound but
a complex mixture of several calcium arsenates and an
excess of calcium hydroxide. The material is made
from arsenic trioxide by first oxidizing it to arsenic pentoxide
with nitric acid and then reacting the solution of
arsenic pentoxide or arsenic acid with a slurry of
calcium hydroxide. The conditions of temperature,concentration, and duration of reaction are important
because of their influence on the physical nature of the
product. | [Physical properties]
Commercial calcium arsenate generally is colored
pink and is alkaline in reaction. It is a finely divided
powder. | [Definition]
ChEBI: Calcium arsenate is a polymer. | [Preparation]
An old method involving electrolysis in solution for
the manufacture of calcium arsenate is as follows.
A solution of arsenious oxide in caustic soda
(As2O3:NaOH=198:250) is electrolyzed between iron
electrodes. Hydrogen and a small quantity of metallic
arsenic are liberated at the cathode and very little
oxygen at the anode, the basic arsenite in solution being
oxidized to arsenate. When this oxidation is complete,
any arsenic is filtered off and the solution treated with
milk of lime. A basic arsenate of extremely low solubility
is precipitated and after removal, is washed and dried. | [Potential Exposure]
AgriculturalChemical Tumorigen. Workers engaged in manufacture,formulation, and application of pesticides containing calcium arsenate. | [First aid]
If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, getmedical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.Medical observation is recommended for 24-48 h afterbreathing overexposure.Note to physician: For severe poisoning BAL [BritishAnti-Lewisite, dimercaprol, dithiopropanol (C3H8OS2)] hasbeen used to treat toxic symptoms of certain heavy metalspoisoning including arsenic. Although BAL is reported tohave a large margin of safety, caution must be exercised,because toxic effects may be caused by excessive dosage.Most can be prevented by premedication with 1-ephedrinesulfate (CAS: 134-72-5). For milder poisoning penicillamine(not penicillin) has been used, both with mixed success.Side effects occur with such treatment and it is never a substitute for controlling exposure. It can only be done understrict medical care. | [storage]
Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with Calciumarsenate you should be trained on its proper handling andstorage. Store in tightly closed containers in a cool, wellventilated area. A regulated, marked area should be established where this chemical is handled, used, or stored incompliance with OSHA Standard 1910.1045. | [Shipping]
The DOT label requirement is “POISONOUS/TOXIC MATERIALS.” The Hazard Class is 6.1 and thePacking Group is II. | [Incompatibilities]
None reported, according to NIOSH.When heated produces arsenic fumes. |
| Safety Data | Back Directory | [Risk Statements ]
R23/25:Toxic by inhalation and if swallowed .
R45:May cause cancer.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . | [Safety Statements ]
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S53:Avoid exposure-obtain special instruction before use . | [RIDADR ]
1573 | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
II | [HS Code ]
28429090 | [Safety Profile]
Confirmed human
carcinogen. Poison by ingestion. Moderately
toxic by skin contact. When heated to
decomposition it emits toxic fumes of
arsenic. | [Hazardous Substances Data]
7778-44-1(Hazardous Substances Data) | [Toxicity]
LD50 orally in female rats: 298 mg/kg (Gaines) | [IDLA]
5 mg As/m3 |
|
| Company Name: |
Alfa Aesar
|
| Tel: |
400-6106006 |
| Website: |
http://chemicals.thermofisher.cn |
| Company Name: |
Alfa Aesar
|
| Tel: |
1 800 209 7001 |
| Website: |
www.thermofisher.in |
|