ChemicalBook
Chinese English Japanese Germany Korea

수소화리튬

수소화리튬
수소화리튬 구조식 이미지
카스 번호:
7580-67-8
한글명:
수소화리튬
동의어(한글):
리튬수소화물;리튬하이드라이드;수소화리튬
상품명:
Lithium hydride
동의어(영문):
LiH;Litium hydride;Hydridolithium;Lithlum Hydride;Hydride lithium;LITHIUM HYDRIDE;hydruredelithium;Hydrure de lithium;lithiummonohydride;Lithiumhydridetech
CBNumber:
CB7319774
분자식:
HLi
포뮬러 무게:
7.95
MOL 파일:
7580-67-8.mol

수소화리튬 속성

녹는점
680 °C(lit.)
밀도
0.82 g/mL at 25 °C(lit.)
저장 조건
water-free area
용해도
Slightly soluble in dimethylformamide. Insoluble in acetone, benzene and toluene.
물리적 상태
powder
색상
White to gray
수소이온지수(pH)
>7 (21g/l, H2O, 20℃)
수용성
reacts
감도
Air & Moisture Sensitive
Merck
14,5533
노출 한도
TLV-TWA 0.025 mg/m3 (ACGIH).
CAS 데이터베이스
7580-67-8(CAS DataBase Reference)
NIST
Lithium hydride(7580-67-8)
EPA
Lithium hydride (LiH)(7580-67-8)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 F,C,T
위험 카페고리 넘버 14-34-25-14/15
안전지침서 16-26-27-36/37/39-7/8-45-25
유엔번호(UN No.) UN 1414 4.3/PG 1
WGK 독일 2
RTECS 번호 OJ6300000
F 고인화성물질 10
TSCA Yes
위험 등급 4.3
포장분류 I
HS 번호 28500090
유해 물질 데이터 7580-67-8(Hazardous Substances Data)
독성 LD50 orally in Rabbit: 78 mg/kg
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H260 물과 접촉시 자연 발화성 인화성 가스를 발생시킴 물반응성 물질 및 혼합물 구분 1 위험 P223, P231+P232, P280, P335+ P334,P370+P378, P402+P404, P501
H301 삼키면 유독함 급성 독성 물질 - 경구 구분 3 위험 P264, P270, P301+P310, P321, P330,P405, P501
H314 피부에 심한 화상과 눈에 손상을 일으킴 피부부식성 또는 자극성물질 구분 1A, B, C 위험 P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 눈에 심한 손상을 일으킴 심한 눈 손상 또는 자극성 물질 구분 1 위험 P280, P305+P351+P338, P310
예방조치문구:
P210 열·스파크·화염·고열로부터 멀리하시오 - 금연 하시오.
P223 물과 접촉하지 마시오.
P262 눈, 피부, 의복에 묻지 않도록 하시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P231+P232 불활성 기체 하에서 취급하고, 습기를 방지하시오.
P308 노출되었거나 영향을 받은 경우
P301+P310 삼켰다면 즉시 의료기관(의사)의 진찰을 받으시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P370+P378 화재 시 불을 끄기 위해 (Section 5. 폭발, 화재시 대처방법의 적절한 소화제)을(를) 사용하시오.
P422 적절한 물질을(를) 충진하여 보관하시오.

수소화리튬 C화학적 특성, 용도, 생산

화학적 성질

Lithium hydride (LiH) is a crystalline salt substance(face-centered cubic) that is white in its pure form, As an engineering material, it has properties of interest in many technologies. For example,the high hydrogen content and light weight of LiH make it useful for neutron shields and moderators in nuclear power plants. In addition, the high heat of fusion combined with light weight make LiH appropriate for heat storage media for solar power plants on satellites and may be used as a heat sink for different applications. Typically, processes for production of LiH involve handling of LiH at temperatures above its meltingpoint (688 DC). Type 304L stainless steel is utilized for many process components handling molten LiH.

화학적 성질

Lithium hydride is an off-white to grayish, translucent, odorless solid or white powder that darkens rapidly on exposure to light.

용도

Reducing agent; condensing agent with ketones and acid esters; desiccant; in hydrogen generators; 1 g in water liberates ~2.8 liters of hydrogen at STP.

용도

Industry
Application
Role/benefit
Hydrogen
Hydrogen storage
Storage material/has the highest hydrogen content of any hydride
Hydrogen preparation
Hydrogen source/reacts violently with water to yield hydrogen
Nuclear
Nuclear reactors
Neutron shield material
Thermonuclear weapons
Fusion fuel (lithium-6 deuteride)
Astronomy
Rocket fuel
Excellent thermal value
Organic chemistry
Synthesis of complex metal hydrides
Raw material
Preparation of LiAlH4,LiBH4 and LiBHET3 ,etc.
Preparation of other hydrides amides and 2H isotopic compound
Reducing agent
 

용도

Lithium hydride is used in the manufactureof lithium aluminum hydride and silane, as apowerful reducing agent, as a condensationagent in organic synthesis, as a portablesource of hydrogen, and as a lightweight nuclear shielding material. It is now beingused for storing thermal energy for spacepower systems (Morris et al. 1988).

용도

Lithium hydride is a bluish-white crystal that is flammable in moisture. Used as a source of hydrogen gas that is liberated when LiH becomes wet. LiH is an excellent desiccant and reducing agent as well as a shield that protects from radiation created by nuclear reactions.

제조 방법

Lithium hydride is prepared by heating lithium metal with hydrogen above 440°C. The reaction is exothermic and can be controlled once it is initiated, without external heating. The heat of formation is greater than that of sodium hydride: 2Li + H2 → 2LiH

정의

lithium hydride: A white solid,LiH; cubic; r.d. 0.82; m.p. 680°C; decomposesat about 850°C. It is producedby direct combination of theelements at temperatures above500°C. The bonding in lithium hydrideis believed to be largely ionic;i.e. Li+H- as supported by the factthat hydrogen is released from theanode on electrolysis of the moltensalt. The compound reacts violentlyand exothermically with water toyield hydrogen and lithium hydroxide.It is used as a reducing agent toprepare other hydrides and the 2Hisotopic compound, lithiumdeuteride, is particularly valuable fordeuterating a range of organic compounds.Lithium hydride has alsobeen used as a shielding material forthermal neutrons.

화학 반응

Lithium hydride reacts vigorously with water, forming lithium hydroxide with the evolution of hydrogen:
LiH + H2O → LiOH + H2
The hydride also reacts with ammonia forming lithium amide and evolving hydrogen:
LiH + NH3 → LiNH2 + H2
Lithium hydride is a strong reducing agent and would, therefore, react with compounds that contain oxygen. Even many highly stable oxides of metals and nonmetals can be reduced. It reduces metal oxides to metals and carbon dioxide to carbon:
Fe3O4 + 4LiH → 3Fe + 4NaOH
2LiH + CO2 → Li2O + C + H2O
It undergoes violent reactions with oxidizing agents.
Lithium hydride reacts with aluminum hydride forming lithium aluminum hydride, a powerful reducing agent: LiH + AlH3 → LiAlH4
Lithium hydride consisting of Li+ and H– ions exhibits properties of an ionic salt, both cationic and anionic; such as a strong electrolyte. Thus, when electrolyzed at temperatures slightly below its melting point, it dissociates to Li+ and H¯ ions. Hydrogen gas is liberated at the anode.
The hydride ion, H:¯ being a strong base, would react with alcohols, forming alkoxides and liberating hydrogen:
CH3CH2OH + LiH → CH3CH2OLi + H2
(ethanol)      (lithium ethoxide)
(CH3)3COH + LiH → (CH3)3COLi + H2
(tert-butanol)    (lithium tert-butoxide)

일반 설명

A white or translucent crystalline mass or powder. The commercial product is light bluish-gray lumps due to the presence of minute amounts of colloidally dispersed lithium.

공기와 물의 반응

Burns readily in air, particularly if powdered. May ignite spontaneously in moist air. Reacts rapidly with water to form caustic lithium hydroxide and hydrogen [Bretherick 1979 p. 107].

반응 프로필

Lithium hydride is a strong reducing agent. May decompose violently in contact with most oxidizing materials. Reacts exothermically with water to form caustic lithium hydroxide and hydrogen gas; the hydrogen may ignite. May ignite spontaneously in moist air. Mixtures with liquid oxygen are explosive. Ignites on contact with dinitrogen oxide [Mellor, 1967, vol. 8, suppl. 2.2, p. 214].

건강위험

Lithium hydride is relatively toxic to people. It is more likely to cause irritation of skin and mucous membrane tissues rather than death. Its effects are primarily acute. A massive exposure to the eyes and by inhalation may be lethal. Those experiencing any ailment of the upper respiratory tract (e.g., bronchitis or pneumonia) are at a greater risk.

건강위험

The health hazard due to lithium hydride maybe attributed to the following properties: (1)corrosivity of the hydride, (2) its hydrolysisto strongly basic lithium hydroxide, and (3)toxicity of the lithium metal. However, thelatter property, which may arise becauseof the formation of lithium resulting fromthe decomposition of lithium hydride andthe metabolic role of lithium, is not yetestablished.
This compound is highly corrosive to skin.Contact with eyes can produce severe irritationand possible injury. It can hydrolyzewith body fluid, forming lithium hydroxide,which is also corrosive to the skin andharmful to the eyes. Animal tests indicatedthat exposure to its dust or vapor at a levelexceeding 10 mg/m3 eroded the body fur andskin, caused severe inflammation of the eyes,and led to the destruction of external nasalseptum (ACGIH 1986). No chronic effectswere observed.

화재위험

In a fire, irritating alkali fumes may form. Lithium hydride can form airborne dust clouds which may explode on contact with flame, heat, or oxidizing materials. Additionally, spontaneous ignition occurs when nitrous oxide and Lithium hydride are mixed. Lithium hydride also forms explosive mixtures with liquid oxygen. Contact with heat, moisture or acid causes exothermic reaction and evolution of hydrogen as well as lithium hydroxide. Incompatible with air and moisture, nitrous oxide, strong oxidizers, and liquid oxygen. Lithium hydride may ignite spontaneously in air and should be maintained and handled out of contact with air and moisture. Any contact with nitrous oxide; airborne powders may ignite upon reaching moisture.

Safety Profile

Poison by inhalation. A severe eye, skin, and mucous membrane irritant. Upon contact with moisture, lithium hydroxide is formed. The LiOH formed is very caustic and therefore highly toxic, particularly to lungs and respiratory tract, skin, and mucous membranes. The powder ignttes spontaneously in air. The solid can ignite spontaneously in moist air. Mixtures of the powder with liquid oxygen are explosive. Ignttes on contact with dinitrogen oxide, oxygen + moisture. To fight fire, use special mixtures of dry chemical. See also LITHIUM COMPOUNDS and HYDRIDES.

잠재적 노출

Lithium hydride is used in preparation of lithium aluminum hydride; as a desiccant; it is used in hydrogen generators and in organic synthesis as a reducing agent and condensing agent with ketones and acid esters; it is reportedly used in thermonuclear weapons.

운송 방법

UN1414 Lithium, Hazard Class: 4.3; Labels: 4.3-Dangerous when wet material. UN2805 Lithium hydride, fused solid, Hazard Class: 4.3; Labels: 4.3- Dangerous when wet material

Purification Methods

It should be a white powder; otherwise replace it. It darkens rapidly on exposure to air and is decomposed by H2O to give H2 and LiOH, and reacts with lower alcohols. One gram in H2O liberates 2.8L of H2 (could be explosive). [D.nges in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 987 1963.]

비 호환성

A Strong reducing agent. Incompatible with oxidizers, halogenated hydrocarbons; acids can cause fire and explosion. Reacts with water, forming caustic lithium hydroxide and flammable hydrogen gas; reaction may cause ignition. May ignite spontaneously in moist air and may reignite after fire is extinguished. Dangerous when wet. Reacts with water to form hydrogen and lithium hydroxide. Powdered form and liquid oxygen form an explosive compound. Decomposes exothermically on contact with acids and upon heating to about 500C, producing flammable hydrogen gas. Reacts with carboxylic acids, lower alcohols; chlorine, and ammonia (at 400C), forming explosive hydrogen gas.

폐기물 처리

Lithium hydride may be mixed with sand, sprayed with butanol and then with water, neutralized and flushed to a sewer with water

수소화리튬 준비 용품 및 원자재

원자재

준비 용품


수소화리튬 공급 업체

글로벌( 132)공급 업체
공급자 전화 팩스 이메일 국가 제품 수 이점
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21707 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20672 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32447 55
Hebei Chisure Biotechnology Co., Ltd.
+8613292890173
0311 66567340 luna@speedgainpharma.com CHINA 1017 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23980 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930501651
breeduan@crovellbio.com CHINA 2314 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114
sales@amoychem.com CHINA 6372 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 sales@guangaobio.com CHINA 23049 58
Xunteng International Trading Co.,Limited
sales@xuntengchem.com China Hong Kong 879 55
Shanghai Huayu Industrial Co., Ltd. 18917588395
3346096010@qq.com CHINA 19 58

수소화리튬 관련 검색:

Copyright 2019 © ChemicalBook. All rights reserved