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HomeProduct name listSodium m-arsenite

Sodium m-arsenite

  • CAS NO.:7784-46-5
  • Empirical Formula: AsO2.Na
  • Molecular Weight: 129.91
  • MDL number: MFCD00085309
  • EINECS: 232-070-5
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-04-23 13:52:06
Sodium m-arsenite Structural

What is Sodium m-arsenite?

Chemical properties

white granular crystals

Chemical properties

Sodium arsenite is a white or grayish-white powder or flakes.

The Uses of Sodium m-arsenite

Technical grade in manufacture of arsenical soap for use on skins, for treating vines against certain scale diseases; as insecticide especially for termites.

The Uses of Sodium m-arsenite

Sodium arsenite is used as hide preservative, antiseptic, dyeing and soaps. It is used as a stressor to induce production of heat shock proteins.

What are the applications of Application

Sodium (meta)arsenite is a poison which induces oxidative DNA damage

Definition

ChEBI: An inoganic sodium salt with formula with formula NaAsO2.

General Description

A white or grayish-white powder. Denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion, inhalation and skin absorption.

Air & Water Reactions

Soluble in water. Slowly converted in solution to arsenates by atmospheric oxygen; in dry state Sodium m-arsenite is decomposed by carbon dioxide. [EPA, 1998].

Reactivity Profile

Salts, basic, such as SODIUM ARSENITE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.

Hazard

Toxic by ingestion and inhalation.

Health Hazard

Extremely toxic: probable oral lethal dose (human) 5-50 mg/kg, between 7 drops and one teaspoon for 70 kg person (150 lb.). Poisonous if swallowed or inhaled. Human suspected carcinogen.

Fire Hazard

Sodium m-arsenite may burn but does not ignite readily. When heated Sodium m-arsenite emits toxic fumes of arsenic and sodium oxide. Slowly converted in solution to arsenates by atmospheric oxygen; in dry state Sodium m-arsenite is decomposed by carbon dioxide.

Safety Profile

Confirmed human carcinogen. Human poison by ingestion. Experimental poison by ingestion, skin contact, intravenous, intramuscular, and intraperitoneal routes. An experimental teratogen. Experimental reproductive effects. Human mutation data reported. Used as an herbicide and pesticide. When heated to decomposition it emits toxic fumes of arsenic and NazO. See also ARSENIC COMPOUNDS.

Potential Exposure

This material is used in manufacturing of arsenical soap for use on skin; treating vines against certain scale diseases; wood preservation; as a reagent in preparation of Methylene iodide; corrosion inhibitor; and for herbicidal and pesticidal purposes

Shipping

UN2027 Sodium arsenite, solid, Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN1686 Sodium arsenite, aqueous solutions, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

Incompatibilities

Chemically active metals. Arsine, a very deadly gas, can be released in the presence of acid, acid mists, or hydrogen gas.

Waste Disposal

The arsenic may be precipitated as calcium arsenite. It should be stored until recycled. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.

Properties of Sodium m-arsenite

Melting point: 817 °C(lit.)
Boiling point: 613 °C(lit.)
Density  5.727 g/mL at 25 °C(lit.)
storage temp.  Store at +15°C to +25°C.
solubility  H2O: soluble
form  powder
color  off-white to gray
PH 9.3 (H2O, 20°C)
Water Solubility  Miscible with water. Slightly miscible with alcohol.
Merck  13,8651
Stability: Stable. Incompatible with strong oxidizing agents, strong acids. Protect from moisture. Absorbs carbon dioxide from air.
EPA Substance Registry System Sodium arsenite (7784-46-5)

Safety information for Sodium m-arsenite

Signal word Danger
Pictogram(s)
ghs
Skull and Crossbones
Acute Toxicity
GHS06
ghs
Health Hazard
GHS08
ghs
Environment
GHS09
GHS Hazard Statements H350:Carcinogenicity
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P201:Obtain special instructions before use.
P202:Do not handle until all safety precautions have been read and understood.
P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P273:Avoid release to the environment.
P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

Computed Descriptors for Sodium m-arsenite

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