니오브 펜타염화물
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니오브 펜타염화물 속성
- 녹는점
- 204.7 °C(lit.)
- 끓는 점
- 254 °C(lit.)
- 밀도
- 2.75 g/mL at 25 °C(lit.)
- 증기압
- 22.8hPa at 153.8℃
- 인화점
- 248.2°C
- 저장 조건
- no restrictions.
- 용해도
- 알코올, 염산, 사염화탄소 및 클로로포름에 용해됩니다.
- 물리적 상태
- 가루
- 색상
- 노란색
- Specific Gravity
- 2.75
- 수용성
- 물, 알코올, HCl 및 사염화탄소에 용해됩니다.
- 감도
- Moisture Sensitive
- Merck
- 14,6557
- CAS 데이터베이스
- 10026-12-7(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | C,Xi | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 20/21/22-34 | ||
| 안전지침서 | 26-27-28-36/37/39 | ||
| 유엔번호(UN No.) | UN 3260 8/PG 2 | ||
| WGK 독일 | 3 | ||
| RTECS 번호 | QU0350000 | ||
| F 고인화성물질 | 21 | ||
| TSCA | Yes | ||
| 위험 등급 | 8 | ||
| 포장분류 | III | ||
| HS 번호 | 28273985 | ||
| 독성 | LD50 in mice (mg/kg): 61 i.p., 940 orally (Haley); LD50 in mice, rats (mg/kg): 829, 1400 orally (Zhilova, Kasparov) | ||
| 기존화학 물질 | KE-25900 |
니오브 펜타염화물 C화학적 특성, 용도, 생산
화학적 성질
yellow fine crystalline powder물리적 성질
Yellow monoclinic crystals; deliquesces; density 2.75 g/cm3; decomposes in moist air with the evolution of HCl; melts at 204.7°C; vaporizes at 254°C; decomposes in water; soluble in alcohol, hydrochloric acid, chloroform and carbon tetrachloride.용도
Niobium(V) chloride is the precursor in the preparation of pure niobium, and ferroniobium. It is used as a Lewis acid catalyst in organic synthesis in activating alkenes in the carbonyl-ene reaction and the Diels-Alder reaction.제조 방법
Niobium pentachloride is obtained as an intermediate during extraction of niobium from its ores (see Niobium). Also, the pentachloride is obtained readily by direct chlorination of niobium metal at 300 to 350°C: 2Nb + 5Cl2 → 2NbCl5The pentachloride also may be made by chlorination of niobium pentoxide in the presence of carbon at 300°C. The products, however, contain small amounts of niobium oxide trichloride, NbOCl3.
위험도
May evolve fumes of hydrogen chloride. Keep drySafety Profile
Poison by intraperitoneal route. Moderately toxic by ingestion. May cause kidney injury. When heated to decomposition it emits very toxic fumes of Cl-. See also NIOBIUM and CHLORIDES.Purification Methods
It forms yellow, very deliquescent crystals which decompose in moist air to liberate HCl. It should be kept in a dry box flushed with N2 in the presence of P2O5. Wash it with CCl4 and dry it over P2O5. The yellow crystals usually contain a few small, dirty white pellets among the yellow needles. These should be easily picked out. Upon grinding in a dry box, however, they turn yellow. NbCl5 has been sublimed and fractionated in an electric furnace. [Epperson Inorg Synth VII 163 1963, Alexander & Fairbrother J Chem Soc suppl 233 1949.] d2 5 20 pK25니오브 펜타염화물 준비 용품 및 원자재
원자재
준비 용품
니오브 펜타염화물 공급 업체
글로벌( 121)공급 업체
| 공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
|---|---|---|---|---|---|
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21691 | 55 |
| career henan chemical co | +86-0371-86658258 |
sales@coreychem.com | China | 29914 | 58 |
| Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22968 | 58 |
| Chongqing Chemdad Co., Ltd | +86-023-61398051 +8613650506873 |
sales@chemdad.com | China | 39916 | 58 |
| Fuxin Pharmaceutical | +86-021-021-50872116 +8613122107989 |
contact@fuxinpharm.com | China | 10297 | 58 |
| Baoji Guokang Bio-Technology Co., Ltd. | 0917-3909592 13892490616 |
gksales1@gk-bio.com | China | 9339 | 58 |
| Zhuoer Chemical Co., Ltd | 02120970332; +8613524231522 |
sales@zhuoerchem.com | China | 3015 | 58 |
| Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 |
1026@dideu.com | China | 9116 | 58 |
| LEAP CHEM CO., LTD. | +86-852-30606658 |
market18@leapchem.com | China | 24738 | 58 |
| Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503259 +86-19930503259 |
cherry@crovellbio.com | China | 18456 | 58 |
니오브 펜타염화물 관련 검색:
바나듐 트리염화물 나이오븀 산화물(니오브 산화물) 펜타에톡시니오브 니오브 펜타염화물 니오븀
tris(N-ethylethanaminato)[2-methyl-2-propanaminato(2-)]-niobium
Trihydridobis(pentaMethylcyclopentadienyl)niobiuM(V)
CYCLOPENTADIENYLNIOBIUM(V) TETRACHLORIDE
Pentakis(dimethylamino)niobium(V)
NIOBIUM (IV) OXIDE
NIOBIUM 2-ETHYLHEXANOATE
NIOBIUM HYDRIDE
NIOBIUM(III) CHLORIDE 1 2-DIMETHOXY- &
NIOBIUM(IV) CHLORIDE TETRAHYDROFURAN COMPLEX
Niobium(III) chloride
Niobium(IV) chloride
NIOBIUM TRICHLORIDE 1,2-DIMETHOXYETHANE COMPLEX
TRIS(2,6-DIISOPROPYLPHENOXY)NIOBIUM(V) CHLORIDE