Sodium bismuthate

Crystal structure
	__ Na + __ O 2− __ Bi 5+
Space group	R 3 (No. 148)
General
Surname	Sodium bismuthate
other names	Sodium bismuth oxide; Sodium trioxobismutate (V);
Ratio formula	NaBiO 3
Brief description	yellow-brown odorless solid
External identifiers / databases
ECHA InfoCard	100.032.220
PubChem	4063671
Wikidata	Q2615130
properties
Molar mass	279.97 g mol −1
Physical state	firmly
solubility	almost insoluble in cold water; Decomposes in hot water;
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 302-315-319-335
	P: 261-305 + 351 + 338-302 + 352-321-405-501
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Sodium bismuthate is an inorganic chemical compound of sodium from the group of bismuthates .

Extraction and presentation

Sodium bismuthate can be obtained by reacting bismuth (III) oxide with sodium hydroxide solution and bromine.

{\ displaystyle \ mathrm {Bi_ {2} O_ {3} +6 \ NaOH + 2 \ Br_ {2} \ longrightarrow 2 \ NaBiO_ {3} +4 \ NaBr + 3 \ H_ {2} O}}

properties

Sodium bismuthate

Sodium bismuthate is a yellow-brown, odorless, hygroscopic solid that is insoluble in cold water. In hot water it decomposes to form bismuth (III) oxide , sodium hydroxide and oxygen .

{\ displaystyle \ mathrm {4 \ NaBiO_ {3} +2 \ H_ {2} O \ longrightarrow 4 \ NaOH + 2 \ Bi_ {2} O_ {3} +3 \ O_ {2}}}

The compound is mostly in the form of a hydrate, the water content fluctuating, generally 3.5 H ₂ O, a maximum of 5 H ₂ O per formula unit. It reacts with acids with partial dissolution and formation of higher bismuth oxides. It oxidizes manganese (II) ions in cold sulfuric acid to form permanganate. Sodium bismuthate is a compound of the ilmenite type and has a trigonal crystal structure with the space group R 3 (space group no. 148) . Template: room group / 148

use

Sodium bismuthate is used to test manganese in iron , steel, and ores. It is also used for the oxidation of alcohols , phenols and olefins . This application was first reported by Rigby in 1949.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h data sheet Sodium bismuth oxide, ACS, 80% min at AlfaAesar, accessed on January 2, 2014 ( PDF )(JavaScript required) .
↑ ^a ^b Georg Brauer (Ed.), With the collaboration of Marianne Baudler u a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 604.
↑ Anderson Dias, Roberto L. Moreira: Crystal structure and phonon modes of ilmenite-type NaBiO3 investigated by Raman and infrared spectroscopies. In: Journal of Raman Spectroscopy. 41, 2010, pp. 698-701, doi : 10.1002 / jrs.2496 .
^ Hisashi Yamamoto, Koichiro Oshima: Main Group Metals in Organic Synthesis . John Wiley & Sons, 2006, ISBN 978-3-527-60535-4 , pp. 372 ff . ( limited preview in Google Book search).
↑ Hitomi Suzuki, Naoki Komatsu, Takuji Ogawa, Toshihiro Murafuji, Tohru Ikegami, Yoshihiro Matano: Organobismuth Chemistry . Elsevier, 2001, ISBN 0-08-053815-0 , pp. 563 ( limited preview in Google Book search).

[Alfa-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h data sheet Sodium bismuth oxide, ACS, 80% min at AlfaAesar, accessed on January 2, 2014 ( PDF )(JavaScript required) .

[brauer-2] Georg Brauer (Ed.), With the collaboration of Marianne Baudler u a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 604.

[DOI10.1002/jrs.2496-3] Anderson Dias, Roberto L. Moreira: Crystal structure and phonon modes of ilmenite-type NaBiO3 investigated by Raman and infrared spectroscopies. In: Journal of Raman Spectroscopy. 41, 2010, pp. 698-701, doi : 10.1002 / jrs.2496 .

[Hisashi_Yamamoto,_Koichiro_Oshima-4] Hisashi Yamamoto, Koichiro Oshima: Main Group Metals in Organic Synthesis . John Wiley & Sons, 2006, ISBN 978-3-527-60535-4 , pp. 372 ff . ( limited preview in Google Book search).

[Hitomi_Suzuki,_Naoki_Komatsu,_Takuji_Ogawa,_Toshihiro_Murafuji,_Tohru_Ikegami,_Yoshihiro_Matano-5] Hitomi Suzuki, Naoki Komatsu, Takuji Ogawa, Toshihiro Murafuji, Tohru Ikegami, Yoshihiro Matano: Organobismuth Chemistry . Elsevier, 2001, ISBN 0-08-053815-0 , pp. 563 ( limited preview in Google Book search).