Name | Sodium bismuthate |
Synonyms | BisMuth SodiuM SodiuM bisMuthat Bismuthate,sodium Sodium bismuthate Bismuthsodiumoxide Sodium bismuthate(V) Bismuth sodium trioxide bismuthate(bio31-),sodium Bismuthate (BiO31-), sodium Bismuth sodium oxide (BiNaO3) Sodium bismuth oxide, ACS min sodium oxobismuthanolate oxide Sodium Bismuthate, Powder, Reagent |
CAS | 12232-99-4 |
EINECS | 235-455-6 |
InChI | InChI=1/Bi.Na.3O/q;+1;;;-1/rBiO3.Na/c2-1(3)4;/q-1;+1 |
Molecular Formula | BiNaO3 |
Molar Mass | 279.97 |
Melting Point | >300°C |
Water Solubility | Soluble in aqueous acid. Insoluble in water. |
Solubility | Aqueous Acid (Slightly, Heated) |
Appearance | Yellow to brown powder |
Color | Yellow to brown |
Odor | Odorless |
Merck | 14,8585 |
Storage Condition | Room Temperature |
Stability | Stable. |
Sensitive | Hygroscopic |
MDL | MFCD00003474 |
Use | Used as analytical reagents, oxidants, also used in the pharmaceutical industry |
Hazard Symbols | Xn - Harmful![]() |
Risk Codes | 22 - Harmful if swallowed |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
WGK Germany | 3 |
RTECS | VZ1750000 |
FLUKA BRAND F CODES | 3 |
TSCA | Yes |
HS Code | 28419085 |
Toxicity | LD100 orally in rats: 720 mg/kg, Hanzlik et al., J. Pharmacol. Exp. Ther. 62, 372 (1938) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
introduction | sodium bismuth is also called sodium bismuth, khaki or brown amorphous powder; Insoluble in cold water, decomposed in hot water. The suspension is a strong oxidant in acidic medium, which can oxidize Mn2 (II) to permanganate MnO-4:5NaBiO3 2Mn2 14H = 2MnO-4 5Bi3 5Na 7H2O can be used as an analytical reagent to determine manganese in steel, etc. |
Application | In photocatalytic materials, sodium bismuth (NaBiO3) is a new and effective photocatalyst. Compared with TiO2 and BiVO4, NaBiO3 is a perovskite metal oxide with unique chemical structure and properties. It is widely used in catalytic synthesis, applied chemical industry and other fields, and can effectively degrade polycyclic aromatic hydrocarbons and various organic dye pollutants in aqueous phase. |
preparation method | the method for preparing sodium bismuth is mainly bromine oxidation method, but the purity of sodium bismuth obtained by this method is low. Kumada et al. reported using ion exchange methods to improve the synthesis process of bismuth salts, but these synthesis methods require several days of heating time |
Use | Used as analytical reagent, oxidant, and also used in the pharmaceutical industry Used for the determination of manganese and oxidant in steel analysis. Sodium bismuth |
production method | 1.? Dry bismuth trioxide is mixed with 1/2 sodium peroxide and heated in air insulated from moisture and carbon dioxide. First, it is quickly heated to 350 ℃, and then slowly heated to 600 ℃ until the gas generation is over. After cooling, it should be confirmed that even if water is added to it, no gas is produced. The reaction is complete. In the experiment, it is best to use a crucible made of fused magnesium oxide. 2. Dissolve reagent grade bismuth nitrate in dilute nitric acid solution. After filtering out the insoluble matter, add water and 30% industrial grade sodium hydroxide solution in turn until the solution is neutral to Congo red indicator. Then, 30% sodium hydroxide solution and sodium hypochlorite aqueous solution containing effective chlorine of not less than 70g/L are added in sequence to carry out oxidation reaction: the reaction needs to be heated to 95 ℃ and maintained for 1h. After the reaction is over, let it stand for cooling, divide the supernatant, wash the precipitate with water until the lotion does not contain Cl-sub, and then dry at 80 ℃, which is the finished product. |
category | toxic substances |
toxicity classification | highly toxic |
acute toxicity | oral-rat LD50 470 mg/kg |
flammability hazard characteristics | non-combustible; toxic bismuth and sodium oxide fumes are produced on the fire site |
storage and transportation characteristics | warehouse is low temperature, ventilated and dry; Store separately from food raw materials |
fire extinguishing agent | water, carbon dioxide, dry powder, foam |