NIOBIUM BROMIDE
- CAS No.
- 13478-45-0
- Chemical Name:
- NIOBIUM BROMIDE
- Synonyms
- NbBr5;99.9%Nb;NIOBIUM BROMIDE;Einecs 236-778-5;NIOBIUM (V) BROMIDE;NIOBIUM PENTABROMIDE;niobiumbromide(nbbr5);Niobium(V)pentabromide;Niobium bromide (NbBr5);NIOBIUM(V) BROMIDE 98%
- CBNumber:
- CB8102807
- Molecular Formula:
- Br5Nb
- Molecular Weight:
- 492.43
- MDL Number:
- MFCD00016227
- MOL File:
- 13478-45-0.mol
| Melting point | 150°C |
|---|---|
| Boiling point | 361,6°C |
| Density | 4.360 |
| solubility | soluble in H2O, ethanol |
| form | Powder |
| color | reddish-brown |
| Water Solubility | soluble H2O, alcohol, ethyl bromide [KIR81] |
| Sensitive | moisture sensitive |
| EPA Substance Registry System | Niobium bromide (NbBr5) (13478-45-0) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS07,GHS05 |
|---|---|
| Signal word | Danger |
| Hazard statements | H332-H314-H312-H302 |
| Precautionary statements | P261-P271-P304+P340-P312-P260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501-P280-P302+P352-P312-P322-P363-P501-P264-P270-P301+P312-P330-P501 |
| Hazard Codes | C |
| Risk Statements | 20/21/22-34 |
| Safety Statements | 26-27-28-36/37/39-45 |
| RIDADR | UN 3260 8/PG 2 |
| WGK Germany | 3 |
| HazardClass | 8 |
| PackingGroup | III |
NIOBIUM BROMIDE price More Price(2)
NIOBIUM BROMIDE Chemical Properties,Uses,Production
Chemical Properties
yellow powder(s) or red crystals; ortho-rhomb, a=0.6127nm, b=1.2198 nm, c=1.855 nm; m.p. 265.2°C, b.p. 361.6°C; sensitive to moisture; can be formed by reacting Br2 and niobium at ~500°C [STR93] [KIR81]
Synthesis
(1) First, the air is completely removed from the reactor. Then,
the section of the tube containing the metal is heated by a coil wound directly on the reactor, or by a tubular electric furnace o.
If Nb powder is used, then bromide formation begins at 90°C; with
solid Nb, it starts at 195°C . The nascent bromide
sublimes onto cold finger /. When larger quantities are desired,
large-diameter receiver a is attachedtotheendof the reactor. The
extremely hygroscopic bromide should be removed from the
apparatus while the latter is in a dry box.
Nb + 5/2Br2 = NbBr5.
(2) In the method of Chaigneau, the mixture of pentoxide and AlBr3,
in proportions indicated by the above equation, is sealed under
vacuum into a Pyrex glass tube (before use, the AlBr3 is purified
by vacuum sublimation). The tube is heated for 24 hours at 200°C,
and allowed to cool; the small amounts of Br 3 formed in the process
and residual AlBr3 are vacuum-sublimed at 140°C. The pure
pentahalide is then separated from the Al 3O3 by vacuum sublimation
at 240°C, yielding large crystals.
3 Nb2O5 + 10AlBr3 = 6 NbBr5 + 5A12O
(3) Nb2O5 + 3 C + 6 Br2 = 2 NbBr5 + COBr2 + 2 CO2
NIOBIUM BROMIDE Preparation Products And Raw materials
NIOBIUM BROMIDE Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 | 1026@dideu.com | China | 9003 | 58 |
| J & K SCIENTIFIC LTD. | 010-82848833 400-666-7788 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 021-61259108 18621169109 | market03@meryer.com | China | 40240 | 62 |
| Shanghai Witofly Chemical Co. ,Ltd. | 021-021-50630626 18964684208 | sales@witofly.com | China | 1598 | 55 |
| Shenzhen Polymeri Biochemical Technology Co., Ltd. | +86-400-002-6226 13028896684 | sales@rrkchem.com | China | 56057 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | 029-81024372 15029046529 | 1027@dideu.com | China | 10010 | 58 |
| Guangzhou Yunmen Biotechnology Co., Ltd | 18902340307 18902340307 | 3356812514@qq.com | China | 9241 | 58 |
| Guangdong wengjiang Chemical Reagent Co., Ltd. | 0751-2815987 13927875076 | 3007432263@qq.com | China | 9977 | 58 |
| Aikon International Limited | 18626450290 | yftan@aikonchem.com | China | 10718 | 58 |
| Hubei Enxing Biotechnology Co., Ltd | 16621771607 | exbio_tech@163.com | China | 8329 | 58 |
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