diniobiumpentoxide
Niobium(V) oxide
CAS: 1313-96-8;12627-00-8
Molecular Formula: Nb2O5
diniobiumpentoxide - Names and Identifiers
| Name | Niobium(V) oxide |
| Synonyms | niobia Nb2-O5 NIOBIC ACID Niobium oxide NIOBIUM OXIDE NIOBIUM(+5)OXIDE Niobium(V) oxide NIOBIUM(V) OXIDE NIOBIUM PENTOXIDE diniobiumpentoxide diniobium pentaoxide |
| CAS | 1313-96-8 12627-00-8 |
| EINECS | 215-213-6 |
| InChI | InChI=1/2Nb.5O/rNb2O5/c3-1(4)7-2(5)6 |
| InChIKey | ZKATWMILCYLAPD-UHFFFAOYSA-N |
diniobiumpentoxide - Physico-chemical Properties
| Molecular Formula | Nb2O5 |
| Molar Mass | 265.81 |
| Density | 4.47g/mLat 25°C(lit.) |
| Melting Point | 1520 °C |
| Water Solubility | insoluble |
| Appearance | White powder |
| Specific Gravity | 4.6 |
| Color | White to off-white |
| Merck | 14,6559 |
| Storage Condition | Room Temprature |
| Stability | Stable. |
| Sensitive | Easily absorbing moisture |
| MDL | MFCD00011128 |
| Physical and Chemical Properties | Character white powder. melting point 1485 ℃ ± 5 ℃ relative density 4.47 solubility insoluble in water, insoluble in acid, soluble in molten potassium hydrogen sulfate or alkali metal carbonate, hydroxide. |
| Use | Used as a raw material for the production of metal niobium, also used in optical glass and electronic industry |
diniobiumpentoxide - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | - |
| RTECS | QU0500000 |
| TSCA | Yes |
| HS Code | 28259090 |
diniobiumpentoxide - Nature
Open Data Verified Data
White Crystal or powder. The relative density was 4.6. Melting point 1520 °c. Yellow when heated, insoluble in water, soluble in hydrofluoric acid and sulfuric acid. It is compatible with alkali metal carbonates and hydroxides.
Last Update：2024-01-02 23:10:35
diniobiumpentoxide - Preparation Method
Open Data Verified Data
fluoric acid is obtained by dissolving fluoric acid or crude niobium pentoxide in a mixture of nitric acid and hydrofluoric acid, and then niobium is extracted with a mixture of strong acid and methyl isobutyl ketone, the niobium hydroxide precipitate was obtained by the reaction of ammonia water and fluoric acid, and the purified niobium pentoxide was obtained by washing, drying and burning.
Last Update：2022-01-01 09:05:59
diniobiumpentoxide - Introduction
It turns yellow when heated, can be co-soluble with potassium pyrosulfate, potassium hydroxide and potassium carbonate, and is also soluble in alkali metal carbonates and hydroxides, as well as hydrofluoric acid and hot sulfuric acid, and is insoluble in water. Low toxicity, half lethal dose (rat, oral) 1400mg/kg. It's irritating.
Last Update：2022-10-16 17:13:16
diniobiumpentoxide - Use
Open Data Verified Data
is a raw material for the manufacture of ceramic capacitors, Niobium Salts and metal phosphonium. It is used as a piezoelectric conductor material in the electronics industry, and is also used for catalysts, refractory materials and preparation of standard solutions.
Last Update：2022-01-01 09:05:59
diniobiumpentoxide - Safety
Open Data Verified Data
rat oral LDso:1400mg/kg. It is irritating to the respiratory tract, and the maximum allowable concentration of niobium and its oxides in the air is 10 mg/m3. Personnel working in high dust environment should be fully protected, and the environment should have good ventilation conditions. Should be stored in a ventilated, dry warehouse. In the transport process to prevent rain. When there is a fire, it can be suppressed by using water, sand and a fire extinguisher.
Last Update：2022-01-01 09:06:00
diniobiumpentoxide - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| application | niobium pentoxide is mainly used in ceramics, electronic ceramics, optical glass, glass coating, liquid crystal display, energy and other industries. In recent years, with the rapid development of glass coating, liquid crystal display and other industries, the demand for niobium pentoxide targets, especially high-quality niobium pentoxide targets, is increasing. under normal circumstances, for high-quality targets, one is required to have higher density (>99.5%) and higher purity (>99.99%); The second is to have good microscopic phase structure, that is, the particle size of the target crystal is at micron level and evenly distributed. In addition, niobium pentoxide targets also need to have better mechanical properties. |
| toxicity | occupational poisoning has not been recorded. The incidence of upper respiratory tract is relatively high in workers using niobium complexes, which may be related to the effects of isolated hydrogen fluoride and fluorobioate. The maximum allowable concentration of niobium and its oxides is 10 mg/m3; Fluorine-containing compounds are usually calculated as fluorine, I. e. 1 mg/m3. When working in an environment with high dust content, you should wear an anti-virus mask, pay attention to ventilation and dust removal. |
| Use | Used as a raw material for the production of metallic niobium, and also used in the optical glass and electronics industry Used as a single crystal of nickel niobate to make special optical glass, High-frequency and low-frequency capacitors and piezoelectric ceramic components. It is also used to produce various niobium alloys required for iron niobium and special steels. It is the raw material for the preparation of niobium and its compounds. It is also used as catalyst and refractory material. Manufacture niobium salt and metal niobium, and prepare standard solution. The electronics industry is used as a piezoelectric conductor material. |
| production method | roasting method dissolves niobium material or crude niobium pentoxide into a mixed solution of nitric acid and hydrofluoric acid to generate fluorobium acid, and uses a strong acid and methyl isobutanone The organic mixed solution extracts niobium, and after backextraction, reacts with ammonia and fluorobium acid to generate niobium hydroxide precipitation, and then washed, dried and burned to obtain refined niobium pentoxide. Its 3Nb 5HNO3 21HF → 3H2NbF7 5NO 10H2OH2NbF7 7NH4OH → Nb(OH)5 7NH4F 2 H2O2Nb(OH)5 → 2Nb(OH)5 5H2O |
Last Update：2024-04-09 02:00:06
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View History
diniobiumpentoxide
2,4-二溴-6-硝基苯胺
3,5-DICHLORO-4-PROPOXYBENZOIC ACID
2-Fluoro-α-methyl-4-diphenylacetic acid sodium salt
4,4-Diethoxy-2-(ethoxymethylene)-3-oxopentanoic acid ethyl ester
Salinomycin hydrate monosodium salt
5-Amino-2-chlorobenzaldehyde
2,4-二溴-6-硝基苯胺
3,5-DICHLORO-4-PROPOXYBENZOIC ACID
2-Fluoro-α-methyl-4-diphenylacetic acid sodium salt
4,4-Diethoxy-2-(ethoxymethylene)-3-oxopentanoic acid ethyl ester
Salinomycin hydrate monosodium salt
5-Amino-2-chlorobenzaldehyde