CAS #:

Linear Formula:

KAsO2

MDL Number:

MFCD01780194

EC No.:

233-337-9

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PRODUCT Product Code ORDER SAFETY DATA TECHNICAL DATA
Potassium Arsenite
K-ASIT-01-C
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Potassium Arsenite Properties (Theoretical)

Compound Formula KAsO2
Molecular Weight 146.109
Appearance White to off-white powder, crystals, or chunks
Melting Point ~300 °C (decomposes)
Boiling Point N/A
Density 8.76 g/cm3
Solubility in H2O N/A
Crystal Phase / Structure Orthorhombic
Exact Mass 145.87513 g/mol
Monoisotopic Mass 145.87513 g/mol

Potassium Arsenite Health & Safety Information

Signal Word Danger
Hazard Statements H301-H331-H410
Hazard Codes T, N
Precautionary Statements P261-P273-P301+P310-P311-P501
Risk Codes R23/25-R50/53
Safety Statements S(1/2)-S20/21-S28-S45-S60-S61
RTECS Number N/A
Transport Information UN 1557 6.1/PG II
GHS Pictograms
MSDS / SDS

About Potassium Arsenite

American Elements manufactures Potassium Arsenite in both research and bulk quantities. American Elements produces materials to many standard grades when applicable including Mil Spec (military grade), ACS, Reagent and Technical Grades; Food, Agricultural and Pharmaceutical Grades, Optical, Semiconductor, and Electronics Grades, and follows applicable USP, EP/BP, and ASTM testing standards. Most materials can be produced in high and ultra high purity forms (99%, 99.9%, 99.99%, 99.999%, and higher). Standard and custom packaging is available. Additional technical, research and safety (SDS) information is available. Please request a quote above to receive pricing information based on your specifications.

Potassium Arsenite Synonyms

Potassium arsonate, Potassium metaarsenite, potassium meta-arsenite, Arsenenous acid potassium salt, Arsenious acid potassium salt, UNII-BM2U42PAKI, potassium orthoarsenite (Ortho - AsK3O3, CAS 13464-35-2, EC 236-680-2, MFCD01941643)

Chemical Identifiers

Linear Formula KAsO2
MDL Number MFCD01780194
EC No. 233-337-9
Pubchem CID 23668346
IUPAC Name potassium; oxoarsinite
SMILES [O-][As]=O.[K+]
InchI Identifier InChI=1S/AsHO2.K/c2-1-3;/h(H,2,3);/q;+1/p-1
InchI Key HEQWEGCSZXMIJQ-UHFFFAOYSA-M

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

Arsenic

See more Arsenic products. Arsenic (atomic symbol: As, atomic number: 33) is a Block P, Group 15, Period 4 element with an atomic radius of 74.92160. Arsenic Bohr ModelThe number of electrons in each of arsenic's shells is 2, 8, 18, 5 and its electron configuration is [Ar] 3d10 4s2 4p3. The arsenic atom has a radius of 119 pm and a Van der Waals radius of 185 pm. Arsenic was discovered in the early Bronze Age, circa 2500 BC. It was first isolated by Albertus Magnus in 1250 AD. In its elemental form, arsenic is a metallic grey, brittle, crystalline, semimetallic solid. Elemental ArsenicArsenic is found in numerous minerals including arsenolite (As2O3), arsenopyrite (FeAsS), loellingite (FeAs2), orpiment (As2S3), and realgar (As4S4). Arsenic has numerous applications as a semiconductor and other electronic applications as indium arsenide, silicon arsenide and tin arsenide. Arsenic is finding increasing uses as a doping agent in solid-state devices such as transistors.

Potassium

Elemental PotassiumSee more Potassium products. Potassium (atomic symbol: K, atomic number: 19) is a Block S, Group 1, Period 4 element with an atomic weight of 39.0983. The number of electrons in each of Potassium's shells is [2, 8, 8, 1] and its electron configuration is [Ar] 4s1. The potassium atom has a radius of 227.2 pm and a Van der Waals radius of 275 pm. Potassium was discovered and first isolated by Sir Humphrey Davy in 1807. Potassium is the seventh most abundant element on earth. It is one of the most reactive and electropositive of all metals and rapidly oxidizes. As with other alkali metals, potassium decomposes in water with the evolution of hydrogen because of its reacts violently with water, it only occurs in nature in ionic salts.Potassium Bohr Model In its elemental form, potassium has a silvery gray metallic appearance, but its compounds (such as potassium hydroxide) are more frequently used in industrial and chemical applications. The origin of the element's name comes from the English word 'potash,' meaning pot ashes, and the Arabic word qali, which means alkali. The symbol K originates from the Latin word kalium.

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