과산화리튬
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과산화리튬 속성
- 녹는점
- 340°C (dec.)
- 밀도
- 2.310
- 용해도
- 무수 아세트산에 용해됩니다. 알코올에 불용성.
- 물리적 상태
- 가루
- 색상
- 흰색에서 연한 노란색
- 수용성
- H2O에 대한 용해도는 8%(20°C)입니다. 아세트산의 용해도는 5.6%(20°C)입니다. 불용성 무수 알코올(20°C) [HAW93]
- 감도
- Air & Moisture Sensitive
- CAS 데이터베이스
- 12031-80-0(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | O,C | ||
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위험 카페고리 넘버 | 8-35 | ||
안전지침서 | 8-26-27-28-36/37/39-45 | ||
유엔번호(UN No.) | UN 1472 5.1/PG 2 | ||
WGK 독일 | 3 | ||
F 고인화성물질 | 3-10-23 | ||
TSCA | Yes | ||
위험 등급 | 5.1 | ||
포장분류 | II | ||
HS 번호 | 28259085 | ||
유해 물질 데이터 | 12031-80-0(Hazardous Substances Data) | ||
기존화학 물질 | KE-10992 |
과산화리튬 C화학적 특성, 용도, 생산
화학적 성질
Lithium peroxide is a white crystalline solid or pale yellow powder which is thermodynamically stable at room temperature. The substance decomposes on heating to 195°C (the exact decomposition temperature is subject to dispute) with the formation of lithium oxide and oxygen. The decomposition forms the basis for one preparation of lithium oxide. High-purity lithium peroxide may be stored for long periods of time with no significant decomposition.The reaction of carbon dioxide and lithium peroxide is noted above. When lithium peroxide is exposed to the air, lithium carbonate is the final product. Dissolving pure lithium peroxide in water produces an alkaline solution containing lithium ions and hydroperoxide ions. The decomposition of the solution is typical in that oxygen is released on heating or in the presence of a catalyst. The water solubility of lithium peroxide decreases with increasing temperature.
![Lithium peroxide structure](https://www.chemicalbook.com/NewsImg/2020-01-03/20201316192413111.jpg)
용도
At this time no important industrial uses of lithium peroxide are known. One interesting potential application is in the field of atmosphere regeneration for undersea and space applications, since the compound reacts with carbon dioxide to release oxygen: Li2O2+C02 -> Li2CO3 + 0.5O2.제조 방법
Lithium peroxide is prepared industrially by the reaction of lithium hydroxide monohydrate with hydrogen peroxide which yields lithium hydroperoxide monohydrate.LiOH·H20 + H202 → LiOOH·H20+H20
The hydroperoxide may be dehydrated by heating in a vacuum to yield the peroxide.
2LiOOH·H20 → Li202+H202 + 2H20