BENZENESELENINIC ANHYDRIDE
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BENZENESELENINIC ANHYDRIDE 속성
- 녹는점
- 165-170 °C (lit.)
- 끓는 점
- 184.2±23.0 °C(Predicted)
- 물리적 상태
- 고체
- 물리적 상태
- 단단한 모양
- 감도
- Moisture Sensitive
- BRN
- 2332406
- CAS 데이터베이스
- 17697-12-0(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | T,N | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 23/25-33-50/53 | ||
| 안전지침서 | 20/21-28-45-60-61 | ||
| 유엔번호(UN No.) | UN 3283 6.1/PG 2 | ||
| WGK 독일 | 3 | ||
| F 고인화성물질 | 3-10-21 | ||
| 위험 등급 | 6.1 | ||
| 포장분류 | III | ||
| HS 번호 | 29310099 |
| 그림문자(GHS): |
  
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| 신호 어: | Danger | |||||||||||||||||||||
| 유해·위험 문구: |
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| 예방조치문구: |
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BENZENESELENINIC ANHYDRIDE C화학적 특성, 용도, 생산
화학적 성질
WHITE TO LIGHT BEIGE POWDER용도
Benzeneseleninic acid anhydride was used to oxidize hydrazines to afford azo-compounds.일반 설명
Oxidation of phenols by benzeneseleninic acid anhydride yields ortho-quinones. Benzeneseleninic anhydride acts as a mild oxidant for the conversion of benzylic hydrocarbons into aldehydes or ketones.Purification Methods
When the anhydride is recrystallised from *C6H6 it has m 124-126o, but when this is heated at 140o/1hour in a vacuum or at 90o/2hours it has m 164-165o and gives a solid m 124-126o when then recrystallised from *C6H6. Both depress the melting point of the acid PhSeO2H. If the high melting anhydride is dissolved in *C6H6 and seeded with the high melting anhydride, the high melting anhydride crystallises out. It readily absorbs H2O to form the acid (PhSeO2H, m 122-124o). Because of this the commercial anhydride could contain up to 30% of the acid. It is best purified by converting to the HNO3 complex (m 112o) and heating this in vacuo at 120o/72hours to give the anhydride as a white powder m 164-165o. Alternatively heat the anhydride in vacuo at 120o/72 hours until the IR shows no OH band. [Ayvrey et al. J Chem Soc 2089 1962, Barton et al. J Chem Soc, Perkin Trans 1 567 1977, Beilstein 11 H 422, 11 I 110, 11 III 716, 11 IV 708.] TOXIC solid.BENZENESELENINIC ANHYDRIDE 준비 용품 및 원자재
원자재
준비 용품
BENZENESELENINIC ANHYDRIDE 공급 업체
글로벌( 96)공급 업체
| 공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
|---|---|---|---|---|---|
| career henan chemical co | +86-0371-86658258 15093356674; |
factory@coreychem.com | China | 29826 | 58 |
| Zhengzhou Alfa Chemical Co.,Ltd | +8618530059196 |
sale04@alfachem.cn | China | 12468 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | 0551-65418671 |
sales@tnjchem.com | China | 34572 | 58 |
| Chemsigma International Co., Ltd. | +86-18136843612 +86-19951791336 |
info@chemsigma.com | China | 963 | 58 |
| Hefei Hirisun Pharmatech Co., Ltd | +8615056975894 |
shawn@hirisunpharm.com | CHINA | 9923 | 58 |
| Dayang Chem (Hangzhou) Co.,Ltd. | 571-88938639 +8617705817739 |
info@dycnchem.com | CHINA | 52867 | 58 |
| CR Corporation Lomited | |
fred.wen@crcorporation.cn | CHINA | 12069 | 58 |
| GLR Innovations | +91 9891111994 |
info@glrgroup.in | India | 4542 | 58 |
| Hebei Duling International Trade Co. LTD | +8618032673083 |
sales05@hbduling.cn | China | 15745 | 58 |
| Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503259 +86-19930503259 |
cherry@crovellbio.com | China | 18456 | 58 |