Basic information Chemical Properties Application Preparation Category Toxicity grading Acute toxicity Flammability Hazardous Characteristics Storage and Transport Extinguishing agent Occupational standards Safety Supplier Related
ChemicalBook >  Product Catalog >  Inorganic chemistry >  Inorganic salts >  Metal halide and Halogen salt >  Metal chlorides and salt >  Sodium selenite

Sodium selenite

Basic information Chemical Properties Application Preparation Category Toxicity grading Acute toxicity Flammability Hazardous Characteristics Storage and Transport Extinguishing agent Occupational standards Safety Supplier Related

Sodium selenite Basic information

Product Name:
Sodium selenite
Synonyms:
  • SODIUM SELENITE FOR THE GLASS INDUSTRY
  • SODIUM SELENITE GAMMA-IRRADIATED CELL*CU LTURE TESTE
  • SodiumSeleniteGr(Anhydrous)
  • Sodium selenite, 44-46% Se, anhydrous
  • SODIUM SELENITE, 95% ANHYDROUS
  • Sodium selenite, anhydrous, 99% min, typically 99.75% min (metals basis)
  • SODIUM SELENITEextrapure AR
  • Sodium selenite, 99,8% min, Powder
CAS:
10102-18-8
MF:
Na2O3Se
MW:
172.94
EINECS:
233-267-9
Product Categories:
  • Inorganics
  • inorganic compound
  • Chemical Synthesis
  • Inorganic Salts
  • Materials Science
  • Metal and Ceramic Science
  • AntioxidantSynthetic Reagents
  • SodiumNeural Stem Cell Biology
  • Supplements/Reagents
  • Neural Stem Cell Isolation/Expansion
  • Hybridoma Media SupplementsSynthetic Reagents
  • Sodium
  • Sodium Salts
  • Synthetic Reagents
  • Antioxidant and Free Radical ScavengersSynthetic Reagents
  • AntioxidantCancer Research
  • Chemopreventive Agents
  • Biochemicals Found in Plants
  • Inorganic Salts
  • Nutrition Research
  • Salts
  • Sodium Salts
  • SodiumMetal and Ceramic Science
  • Synthetic Reagents
  • Hybridoma Platform
  • Serum-free Media
Mol File:
10102-18-8.mol
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Sodium selenite Chemical Properties

Melting point:
>350 °C (lit.)
Density 
3.1[at 20℃]
vapor pressure 
0.133Pa at 20℃
storage temp. 
Store at RT.
solubility 
Water (Slightly)
form 
powder
color 
white
Odor
Odorless
Water Solubility 
950 g/L (20 ºC)
Sensitive 
Hygroscopic
Merck 
14,8673
Exposure limits
ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3
InChIKey
BVTBRVFYZUCAKH-UHFFFAOYSA-L
CAS DataBase Reference
10102-18-8(CAS DataBase Reference)
EPA Substance Registry System
Disodium selenite (10102-18-8)
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Safety Information

Hazard Codes 
T+,N,Xi
Risk Statements 
23-28-31-43-51/53-36/37/38
Safety Statements 
28-36/37-45-61-28A-36-26
RIDADR 
UN 2630 6.1/PG 1
WGK Germany 
2
RTECS 
VS7350000
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
I
HS Code 
28429010
Hazardous Substances Data
10102-18-8(Hazardous Substances Data)
Toxicity
LD50 orally in rats: 7 mg/kg (Cummins, Kimura)

MSDS

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Sodium selenite Usage And Synthesis

Chemical Properties

White colored crystalline solid. It could form pentahydrate. It is stable in air and could lose water in dry air. It is soluble in water, insoluble in ethanol. The theoretical selenium content is 45.7%.

Application

  • Nutrition enhancer.
  • Determination of alkaloids and preparation of red colored glass and glaze.
  • Feed additive.
  • Selenium is a component of glutathione peroxidase, maintains the function of the cell membrane through oxidation, and increase the production of protein lipid based endogenous antioxidants. It involves in the energy conversion, effects the metabolism, plays an important role in the fat emulsification and absorption, and in the absorption of a variety of vitamins. At the same time, it involves in the synthesis of coenzyme A and coenzyme Q, effects the function of other enzyme systems. It influences the metabolism of amino acids, protein synthesis, carbohydrate metabolism, and biological oxidation. The lack of selenium in livestock and poultry seriously affect the growth and reproduction.

Preparation

(1) Selenite reacts with sodium hydroxide to produce sodium selenite. Further refinement and addition of dilution agent to obtain the final product.
(2) Selenium reacts with nitric acid to produce selenium oxide, which reacts with sodium hydroxide to produce sodium selenite. Followed drying and grinding to obtain the final product.

Category

Toxic substance

Toxicity grading

Highly toxic

Acute toxicity

Oral-rat LD50: 7 mg/kg; oral-mouse LD50: 7.08 mg/kg.

Flammability Hazardous Characteristics

Non-combustible; gives off toxic fume of selenium oxide in a fire.

Storage and Transport

Stored in a well-ventilated area, at low temperature, and dry condition; food should be stored and transported separately.

Extinguishing agent

Sand, water.

Occupational standards

TLV-TWA 0.2 mg (Selenium)/m3; STEL 0.3 mg (Selenium)/m3.

Chemical Properties

White to light beige crystals

Chemical Properties

Sodium selenite is a white crystalline substance.

Uses

Sodium selenite Na2O3Se is used in the production of red enamels and in the manufacture of clear red glass.

Uses

Used in reducing carcinogenesis with potency greater than selenomethionene

Uses

Removing green color from glass during its manufacture; alkaloidal reagent.

Definition

ChEBI: An inorganic sodium salt composed of sodium and selenite ions in a 2:1 ratio.

General Description

A white colored crystalline solid. Soluble in water and more dense than water. Contact may irritate skin, eyes and mucous membranes. Toxic by ingestion, inhalation and skin absorption.

Air & Water Reactions

Soluble in water.

Reactivity Profile

Sodium selenite is incompatible with strong acids.

Hazard

Toxic by ingestion.

Health Hazard

Toxic by ingestion. In humans, a concentration of 5 ppm in food or 0.5 ppm in milk or water has been estimated to be dangerous. Elemental selenium has low acute systemic toxicity, but dust or fumes can cause serious irritation of the respiratory tract.

Fire Hazard

May burn but will not ignite readily. When heated to decomposition, may emit toxic fumes of selenium and sodium oxide. Stable in air.

Flammability and Explosibility

Non flammable

Safety Profile

Poison by ingestion, intraperitoneal, intravenous, subcutaneous, intracervical, parenteral, and intramuscular routes. Experimental teratogenic and reproductive effects. Questionable carcinogen. Human mutation data reported. When heated to decomposition it emits toxic fumes of Se and Na2O. See also SELENIUM COMPOUNDS.

Potential Exposure

Sodium selenite is used in glass manufacturing and as an alkaloidal reagent; for removing green color from glass during its manufacture; alkaloidal reagent; reagent in bacteriology; testing germination of seeds; decorating porcelain; as a livestock feed additive.

Shipping

UN2630 Selenates or Selenites, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

Purification Methods

Crystallise sodium selenite from a saturated aqueous solution where its solubility is 68% at 20o to give the pentahydrate salt. This yields the anhydrous salt on heating at 40o. [Fehér in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 431 1963].

Incompatibilities

The aqueous solution is a medium strong base. Reacts with water, strong acids; hot surfaces; causing decomposition and a toxic hazard.

Waste Disposal

Liquid or solid: make a strongly acidic solution using hydrochloric acid. Slowly add sodium sulfite to the cold solution. Stir mixture producing sulfur dioxide. Heat, forming dark-gray selenium and black tellurium. Let stand overnight. Filter and dry. Ship to supplier.

Sodium seleniteSupplier