Selenious acid
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- $21.2 - $1580
- Product name: Selenious acid
- CAS: 7783-00-8
- MF: H2O3Se
- MW: 128.97
- EINECS:231-974-7
- MDL Number:MFCD00134090
- Synonyms:Selenousacid(99.999%-Se)PURATREM;SELENIOUSACID,REAGENT;SELENOUS ACID: 99.999% PURATREM;seleniousacid(h2seo3) ;SELENOUS ACID 99%;Selenium, AAS standard solution, Specpure(R), Se 1000μg/ml;Selenium, plasma standard solution, Specpure(R), Se 10,000μg/ml;Selenous acid, Puratronic(R), 99.999% (metals basis)
24 prices
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Brand
- A2B
- Chem-Impex
- Rare Earth Products
- Sigma-Aldrich
- Strem Chemicals
- Thermo Scientific Chemicals
- Usbiological
Package
- 5g
- 10g
- 25gm
- 25g
- 50g
- 100ml
- 100g
- 250G
- 500g
- 1KG
- 50 g
- 250 g
- ManufacturerA2B
- Product numberAC42711
- Product descriptionSeleniousacid 99.999%-Se
- Packaging25g
- Price$204
- Updated2021-12-16
- Buy
- ManufacturerA2B
- Product numberAC42711
- Product descriptionSeleniousacid 99.999%-Se
- Packaging100g
- Price$575
- Updated2021-12-16
- Buy
- ManufacturerChem-Impex
- Product number02887
- Product descriptionSelenious acid ≥98%(Assaybytitration)
- Packaging1KG
- Price$750
- Updated2026-05-19
- Buy
- ManufacturerChem-Impex
- Product number02887
- Product descriptionSelenious acid ≥98%(Assaybytitration)
- Packaging250G
- Price$240
- Updated2026-05-19
- Buy
- ManufacturerChem-Impex
- Product number02887
- Product descriptionSelenious acid ≥98%(Assaybytitration)
- Packaging25G
- Price$50
- Updated2026-05-19
- Buy
- ManufacturerChem-Impex
- Product number02887
- Product descriptionSelenious acid ≥98%(Assaybytitration)
- Packaging100G
- Price$140
- Updated2026-05-19
- Buy
- ManufacturerRare Earth Products
- Product numberS3455Q
- Product descriptionSelenousacid,99.999%
- Packaging25gm
- Price$158
- Updated2021-12-16
- Buy
- ManufacturerSigma-Aldrich
- Product number211176
- Product descriptionSelenous acid 98%
- Packaging50g
- Price$87.1
- Updated2026-04-30
- Buy
- ManufacturerSigma-Aldrich
- Product number211176
- Product descriptionSelenous acid 98%
- Packaging10g
- Price$56.3
- Updated2026-04-30
- Buy
- ManufacturerSigma-Aldrich
- Product number229857
- Product descriptionSelenous acid 99.999% trace metals basis
- Packaging50g
- Price$234
- Updated2026-04-30
- Buy
- ManufacturerSigma-Aldrich
- Product number229857
- Product descriptionSelenous acid 99.999% trace metals basis
- Packaging500g
- Price$1580
- Updated2026-04-30
- Buy
- ManufacturerSigma-Aldrich
- Product number211176
- Product descriptionSelenous acid 98%
- Packaging250g
- Price$298
- Updated2026-04-30
- Buy
- ManufacturerStrem Chemicals
- Product number34-0100
- Product descriptionSelenous acid (99.999%-Se) PURATREM (99.999%-Se)
- Packaging100g
- Price$690
- Updated2026-04-30
- Buy
- ManufacturerStrem Chemicals
- Product number34-0100
- Product descriptionSelenous acid (99.999%-Se) PURATREM (99.999%-Se)
- Packaging25g
- Price$230
- Updated2026-04-30
- Buy
- ManufacturerThermo Scientific Chemicals
- Product number012574
- Product descriptionSelenous acid, 97%
- Packaging5g
- Price$21.2
- Updated2026-04-24
- Buy
- ManufacturerThermo Scientific Chemicals
- Product number19887
- Product descriptionSelenious acid, 98% 98%
- Packaging250 g
- Price$229.65
- Updated2026-04-24
- Buy
| Manufacturer | Product number | Product description | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|
| A2B | AC42711 | Seleniousacid 99.999%-Se | 25g | $204 | 2021-12-16 | Buy |
| A2B | AC42711 | Seleniousacid 99.999%-Se | 100g | $575 | 2021-12-16 | Buy |
| Chem-Impex | 02887 | Selenious acid ≥98%(Assaybytitration) | 1KG | $750 | 2026-05-19 | Buy |
| Chem-Impex | 02887 | Selenious acid ≥98%(Assaybytitration) | 250G | $240 | 2026-05-19 | Buy |
| Chem-Impex | 02887 | Selenious acid ≥98%(Assaybytitration) | 25G | $50 | 2026-05-19 | Buy |
| Chem-Impex | 02887 | Selenious acid ≥98%(Assaybytitration) | 100G | $140 | 2026-05-19 | Buy |
| Rare Earth Products | S3455Q | Selenousacid,99.999% | 25gm | $158 | 2021-12-16 | Buy |
| Sigma-Aldrich | 211176 | Selenous acid 98% | 50g | $87.1 | 2026-04-30 | Buy |
| Sigma-Aldrich | 211176 | Selenous acid 98% | 10g | $56.3 | 2026-04-30 | Buy |
| Sigma-Aldrich | 229857 | Selenous acid 99.999% trace metals basis | 50g | $234 | 2026-04-30 | Buy |
| Sigma-Aldrich | 229857 | Selenous acid 99.999% trace metals basis | 500g | $1580 | 2026-04-30 | Buy |
| Sigma-Aldrich | 211176 | Selenous acid 98% | 250g | $298 | 2026-04-30 | Buy |
| Strem Chemicals | 34-0100 | Selenous acid (99.999%-Se) PURATREM (99.999%-Se) | 100g | $690 | 2026-04-30 | Buy |
| Strem Chemicals | 34-0100 | Selenous acid (99.999%-Se) PURATREM (99.999%-Se) | 25g | $230 | 2026-04-30 | Buy |
| Thermo Scientific Chemicals | 012574 | Selenous acid, 97% | 5g | $21.2 | 2026-04-24 | Buy |
| Thermo Scientific Chemicals | 19887 | Selenious acid, 98% 98% | 250 g | $229.65 | 2026-04-24 | Buy |
Properties
Melting point :70 °C (dec.) (lit.)
Boiling point :684.9 °C(lit.)
Density :3.004 g/mL at 25 °C (lit.)
vapor pressure :2.7hPa at 15℃
Flash point :690°C
storage temp. :Store at RT.
solubility :H2O: soluble
form :powder
pka :2.46(at 25℃)
color :White to almost white or light pink
Specific Gravity :3.004
PH :3.15(1 mM solution);2.47(10 mM solution);1.9(100 mM solution)
Water Solubility :167 g/100 mL (20 ºC)
Sensitive :Hygroscopic
Merck :14,8430
Exposure limits :ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 Stability :Stable.
InChI :1S/H2O3Se/c1-4(2)3/h(H2,1,2,3) || 1S/H2O3Se/c1-4(2)3/h(H2,1,2,3)
InChIKey :MCAHWIHFGHIESP-UHFFFAOYSA-N || MCAHWIHFGHIESP-UHFFFAOYSA-N
SMILES :O[Se](O)=O || O[Se](O)=O
CAS DataBase Reference :7783-00-8(CAS DataBase Reference)
EPA Substance Registry System :Selenious acid (H2SeO3) (7783-00-8)
Boiling point :684.9 °C(lit.)
Density :3.004 g/mL at 25 °C (lit.)
vapor pressure :2.7hPa at 15℃
Flash point :690°C
storage temp. :Store at RT.
solubility :H2O: soluble
form :powder
pka :2.46(at 25℃)
color :White to almost white or light pink
Specific Gravity :3.004
PH :3.15(1 mM solution);2.47(10 mM solution);1.9(100 mM solution)
Water Solubility :167 g/100 mL (20 ºC)
Sensitive :Hygroscopic
Merck :14,8430
Exposure limits :ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 Stability :Stable.
InChI :1S/H2O3Se/c1-4(2)3/h(H2,1,2,3) || 1S/H2O3Se/c1-4(2)3/h(H2,1,2,3)
InChIKey :MCAHWIHFGHIESP-UHFFFAOYSA-N || MCAHWIHFGHIESP-UHFFFAOYSA-N
SMILES :O[Se](O)=O || O[Se](O)=O
CAS DataBase Reference :7783-00-8(CAS DataBase Reference)
EPA Substance Registry System :Selenious acid (H2SeO3) (7783-00-8)
Safety Information
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Description
Selenous acid is used in steel guns, wherein it changes the color of the steel from silver-grey to blue-grey. It serves as an important component of the Mecke reagent, which is utilized for drug testing. It acts as a source of selenium. It acts as a reagent for alkaloids and an oxidizing agent. Further, it is used in labeling radiopharmaceuticals. It is involved in the organic synthesis for the preparation of glyoxal.More related product prices
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