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Sodium selenite pentahydrate structure
3D Mol Similar
Sodium selenite pentahydrate structure

Sodium selenite pentahydrate

Iupac Name:disodium;selenite;pentahydrate
CAS No.: 26970-82-1
Molecular Weight:263.023
Modify Date.: 2022-11-11 19:14
Introduction:
Sodium selenite pentahydrate, with the chemical formula Na2SeO3·5H2O and CAS registry number 26970-82-1, is a compound that contains sodium, selenium, oxygen, and water molecules. It is a white crystalline solid that is highly soluble in water. Sodium selenite pentahydrate is commonly used as a dietary supplement to provide selenium, an essential trace element, to the body. It is also used in the production of glass, ceramics, and pigments. In addition, sodium selenite pentahydrate has been studied for its potential antioxidant and anticancer properties. However, it is important to note that the use of this compound should be done under proper guidance and supervision, as excessive intake of selenium can be toxic. Overall, sodium selenite pentahydrate plays a significant role in various industries and has potential health benefits when used appropriately.
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1. Names and Identifiers
1.1 Name
Sodium selenite pentahydrate
1.2 Synonyms

Selenious acid (H2SeO3), disodium salt, pentahydrate Selenious acid disodium salt pentahydrate Selenious acid, disodium salt, pentahydrate Selenite (pentahydrate) Sodium selenite (Na2SeO3) pentahydrate SODIUM SELENITE 5-HYDRATE Sodium Selenite Pentahydrate, technical grade SODIUM SELENITE, HYDRATE SODIUM SELENITE, HYDRATE REAGENT SodiumSeleniteGr

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1.3 CAS No.
26970-82-1
1.4 CID
134930
1.5 EINECS(EC#)
233-267-9
1.6 Molecular Formula
H10Na2O8Se (isomer)
1.7 Inchi
InChI=1S/2Na.H2O3Se.5H2O/c;;1-4(2)3;;;;;/h;;(H2,1,2,3);5*1H2/q2*+1;;;;;;/p-2
1.8 InChIkey
TUANAMBRHOLYTH-UHFFFAOYSA-L
1.9 Canonical Smiles
O.O.O.O.O.[O-][Se](=O)[O-].[Na+].[Na+]
1.10 Isomers Smiles
O.O.O.O.O.[O-][Se](=O)[O-].[Na+].[Na+]
2. Properties
2.1 Melting point
710 deg C (1310 deg F) (decomposes)
2.1 Boiling point
°Cat760mmHg
2.1 Flash Point
°C
2.1 Precise Quality
263.93400
2.1 PSA
109.34000
2.1 logP
-1.05870
2.1 Solubility
soluble H2O; insoluble alcohol [HAW93]
2.2 Appearance
white crystal
2.3 Chemical Properties
Sodium selenite pentahydrate is white or almost white, crystalline powder, hygroscopic.
2.4 Color/Form
White or almost white, crystalline powder, hygroscopic.
2.5 PH
9.8-10.8
2.6 Water Solubility
soluble in water and not soluble in ethanol
3. Use and Manufacturing
3.1 Definition
ChEBI: A hydrate that is the pentahydrate form of disodium selenite.
3.2 GHS Classification
Signal: Danger
GHS Hazard Statements
Aggregated GHS information provided by 28 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

H300 (96.43%): Fatal if swallowed [Danger Acute toxicity, oral]
H317 (96.43%): May cause an allergic skin reaction [Warning Sensitization, Skin]
H331 (92.86%): Toxic if inhaled [Danger Acute toxicity, inhalation]
H411 (96.43%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown.

Precautionary Statement Codes
P261, P264, P270, P271, P272, P273, P280, P301+P310, P302+P352, P304+P340, P311, P321, P330, P333+P313, P363, P391, P403+P233, P405, and P501
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3.3 Usage
Sodium selenite pentahydrate is used in treatment of selenium deficiency.
4. Safety and Handling
4.1 Hazard Codes
T+; N
4.1 Risk Statements
R23;R28;R31;R43;R51/53
4.1 Safety Statements
S28;S36/37;S45;S61
4.1 Exposure Standards and Regulations
The food additive selenium fed as a nutrient in the form of sodium selenite or sodium selenate may be safely used on chickens, swine, turkeys, sheep, beef cattle, dairy cattle, and ducks when used in accordance of prescribed conditions.
Specifications and conditions for use of sodium selenite vitamin E capsules are given.
4.2 Packing Group
I
4.2 Other Preventative Measures
Where there is any possibility of exposure of an employee's body to selenium, selenium oxychloride, sodium selenite, sodium selenate, selenium dioxide, or liquids containing these compounds, facilities for quick drenching of the body should be provided within the immediate work area for emergency use.
Employees should be provided with and required to use impervious clothing, gloves, face shields (eight-inch minimum), and other appropriate protective clothing necessary to prevent repeated or prolonged skin contact with selenium, sodium selenite, or sodium selenate.
Non-impervious clothing which becomes contaminated with selenium, sodium selenite, sodium selenate, selenium dioxide or liquids containing these compounds should be removed promptly and not reworn until the contaminant is removed from the clothing.
Skin Exposure: If selenium or its inorganic compounds get on the skin, immediately wash the contaminated skin. If selenium, sodium selenite, sodium selenate, or selenium dioxide soak through the clothing, remove the clothing immediately and wash the skin. If irritation persists after washing, get medical attention.
Keep material out of water sources and sewers. Avoid breathing dusts and fumes from burning material. Keep upwind. Avoid bodily contact with the material.
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4.3 Cleanup Methods
Land spill: Dig a pit, pond, lagoon, or holding area to contain liquid or solid material. /SRP: If time permits, pits, ponds, lagoons, soak holes, or holding areas should be contained with a flexible impermeable membrane liner./ Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water.
Water spill: Adjust pH to neutral (pH 7). If dissolved, apply sodium sulfide (Na2S) solution to precipitate heavy metals. Allow to aerate. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
1. VENTILATE AREA OF SPILL. 2. COLLECT SPILLED MATERIAL IN MOST CONVENIENT & SAFE MANNER & DEPOSIT IN SEALED CONTAINERS FOR RECLAMATION OR FOR DISPOSAL IN A SECURED SANITARY LANDFILL. LIQ CONTAINING SELENIUM & ITS INORGANIC CMPD SHOULD BE ABSORBED IN VERMICULITE, DRY SAND, EARTH, OR SIMILAR MATERIAL.
4.4 DisposalMethods
SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.
4.5 DOT Emergency Guidelines
/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Health: Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Fire or Explosion: Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.
/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at lease 25 meters (75 feet) for solids. Keep unauthorized personnel away. Stay upwind. Keep out of low areas.
/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.
/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Evacuation: ... Fire: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.
/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Fire: Small fires: Dry chemical, CO2 or water spray. Large fires: Water spray, fog or regular foam. Move containers from fire area if you can do it without risk. Dike fire control water for later disposal; do not scatter the material. Use water spray or fog; do not use straight streams. Fire involving tanks or car/trailer loads: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Spill or Leak: Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ First Aid: Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.
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4.6 RIDADR
UN 2630
4.6 Fire Fighting Procedures
Extinguish fire using agent suitable for type of surrounding fire. Material itself does not burn or burns with difficulty. Use water in flooding quantities as fog. Use foam, dry chemical or carbon dioxide. Wear positive pressure self-contained breathing apparatus when fighting fires involving this material.
4.7 Safety Profile
Poison by intramuscular and intraperitoneal routes. An experimental teratogen. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of Se and Na2O. See also SELENIUM COMPOUNDS. Sodium selenite pentahydrate Preparation Products And Raw materials Raw materials
4.8 Formulations/Preparations
BO-SE INJECTION IS EMULSION OF SELENIUM-TOCOPHEROL FOR ... WHITE MUSCLE DISEASE ... IN /ANIMALS/ ... SODIUM SELENITE 2.19 MG/ML.
E-SE INJECTION IS EMULSION OF SELENIUM-TOCOPHEROL FOR ... MYOSITIS ... SYNDROME IN HORSES. EACH ML CONTAINS: SODIUM SELENITE ... 5.48 MG ...
L-SE INJECTION IS EMULSION OF SELENIUM-TOCOPHEROL FOR ... WHITE MUSCLE DISEASE (SELENIUM-TOCOPHEROL DEFICIENCY) ... IN LAMBS & ... BABY PIGS. EACH ML CONTAINS: SODIUM SELENITE ... 0.55 MG ...
MU-SE /INJECTION/ IS EMULSION OF SELENIUM-TOCOPHEROL FOR ... DEFICIENCY SYNDROME IN WEANLING CALVES & BREEDING BEEF CATTLE. EACH ML CONTAINS: SODIUM SELENITE ... 10.95 MG ...
SELETOC IS COMBINATION SELENIUM TOCOPHEROL FOR USE IN ... CERTAIN ARTHROPATHIES IN DOGS. INJECTION: EACH ML CONTAINS: SODIUM SELENITE ... 2.19 MG ... MINICAPS: EACH CAPSULE CONTAINS: SODIUM SELENITE ... 0.55 MG ... CAPSULES: EACH CAPSULE CONTAINS: SODIUM SELENITE ... 2.19 MG.
Technical grade
4.9 WGK Germany
2
4.9 RTECS
VS7420000
5. MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Acute toxicity - Oral, Category 2

Skin sensitization, Category 1

Acute toxicity - Inhalation, Category 3

Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 2

2.2 GHS label elements, including precautionary statements

Pictogram(s) Environmental Hazard Toxic
Signal word

Danger

Hazard statement(s)

H300 Fatal if swallowed

H317 May cause an allergic skin reaction

H331 Toxic if inhaled

H411 Toxic to aquatic life with long lasting effects

Precautionary statement(s)
Prevention

P264 Wash ... thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P272 Contaminated work clothing should not be allowed out of the workplace.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P271 Use only outdoors or in a well-ventilated area.

P273 Avoid release to the environment.

Response

P301+P310 IF SWALLOWED: Immediately call a POISON CENTER/doctor/\u2026

P321 Specific treatment (see ... on this label).

P330 Rinse mouth.

P302+P352 IF ON SKIN: Wash with plenty of water/...

P333+P313 If skin irritation or rash occurs: Get medical advice/attention.

P362+P364 Take off contaminated clothing and wash it before reuse.

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P311 Call a POISON CENTER/doctor/\u2026

P391 Collect spillage.

Storage

P405 Store locked up.

P403+P233 Store in a well-ventilated place. Keep container tightly closed.

Disposal

P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

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6. Computational chemical data
  • Molecular Weight: 263.023g/mol
  • Molecular Formula: H10Na2O8Se
  • Compound Is Canonicalized: True
  • XLogP3-AA: null
  • Exact Mass: 263.93363
  • Monoisotopic Mass: 263.93363
  • Complexity: 18.8
  • Rotatable Bond Count: 0
  • Hydrogen Bond Donor Count: 5
  • Hydrogen Bond Acceptor Count: 8
  • Topological Polar Surface Area: 68.2
  • Heavy Atom Count: 11
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count: 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Isotope Atom Count: 0
  • Covalently-Bonded Unit Count: 8
  • CACTVS Substructure Key Fingerprint: AAADccAAPDAAAAAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
7. Recommended Suppliers
Global26Suppliers View all >>
Wuhan Fortuna Chemical Co., Ltd. Diamond member 11YRS Audited Suppliers China
  • Products:API & Intermediates, Food Addititives,Fine Chemicals. Biochemical & Reagent
  • Tel:0086-27-59207850
  • Email:info@fortunachem.com
High purity Sodium selenite pentahydrate CAS 26970-82-1 with factory price
  • Purity:99%Packing: 200kg/bag FOB
  • Price: 10 USD/kg
  • Time: 2024/03/25
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Hebei Crovell Biotech Co. Ltd Diamond member 3YRS Audited Suppliers China
  • Products:Cosmetic Raw Materials,solvents,etc.
  • Tel:86-311-66562153
  • Email:breeduan@crovellbio.com
China factory supply sodium selenite pentahydrate CAS NO 26970-82-1
  • Purity:99%Packing: 200kg/bag FOB
  • Price: 10 USD/kilogram
  • Time: 2024/03/11
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Amitychem Corporation Diamond member 4YRS Audited Suppliers China
  • Products:Manufacture & Supply Biopharm Chemical, Specialty Chemical, PetroChemical.
  • Tel:86-592-8883942
  • Email:sale@amitychem.com
Factory Supply sodium selenite pentahydrate
  • Purity:99%Packing: 200kg/bag FOB
  • Price: 0.1 USD/kilogram
  • Time: 2023/06/28
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HBminshang Biotechnology Ltd.,Co. Audited Suppliers China
  • Products:Pharmaceutical intermediates. Active pharmaceutical ingredients
  • Tel:1358217-6207-13582176207
Sodium selenite hydrate (2:1:5) cas 26970-82-1
  • Purity:99%Packing: 200kg/bag FOB
  • Price: 33 USD/kilogram
  • Time: 2022/08/31
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Xiamen Zhongyuan Hongye Chemical Co., Ltd. Audited Suppliers Trading Company China
  • Products:pharmaceutical intermediates, biochemistry and customized chemicals, special chemicals, organic and inorganic chemicals, medical devices, electronic chemicals and biological sciences
  • Tel:+86-0592-5567629
High quality Sodium selenite pentahydrate supplier in China
  • Purity:99%Packing: 200kg/bag FOB
  • Price: 1 USD/kilogram
  • Time: 2021/07/13
Inquire
8. Realated Product Infomation
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SODIUM SULFIDE PENTAHYDRATE
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