장기간 또는 반복 노출되면 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킬 수 있음
특정 표적장기 독성 - 반복 노출
구분 2
경고
P260, P314, P501
H412
장기적 영향에 의해 수생생물에 유해함
수생 환경유해성 물질 - 만성
구분 3
P273, P501
예방조치문구:
P210
열·스파크·화염·고열로부터 멀리하시오 - 금연 하시오.
P231+P232
불활성 기체 하에서 취급하고, 습기를 방지하시오.
P280
보호장갑/보호의/보안경/안면보호구를 착용하시오.
P301+P330+P331
삼켰다면 입을 씻어내시오. 토하게 하려 하지 마시오.
P303+P361+P353
피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.
P305+P351+P338
눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
아세틸화나트륨 C화학적 특성, 용도, 생산
개요
Sodium acetylide is an unstable powder, a salt of acetylene. It is a severe explosion risk when shocked or heated. It is used in the manufacture of detonators.
화학적 성질
brown slurry
용도
Sodium acetylide suspension has been used in the preparation of:
2-ethynyladamantan-2-ol1
apical-equatorial (ae) isomer of (Et4N)3[1-(2′-B10H9)-2-NH3B10H8]2
trimethylsilylacetylene3
정의
ChEBI: The salt formed from the acetylide monoanion and a single sodium cation.
Purification Methods
It sometimes contains diluents, e.g. xylene, butyl ether or dioxane which can be removed by filtration followed by a vacuum at 65-60o/5mm. Alternatively the acetylide is purged with HCCH at 100-125o to remove diluent. NaC2H adsorbs 2.2x, 2.0x and 1.6x its wt of xylene, butyl ether and dioxane, respectively. Powdered NaC2H is yellow or yellow-gray in colour and is relatively stable. It can be heated to ca 300o in the absence of air. Although no explosion or evolution of gas occurs, it turns brown due to disproportionation. At 170-190o in air it ignites slowly and burns smoothly. At 215-235o in air it “flash-ignites” and burns quickly. It can be dropped into a slight excess of H2O without flashing or burning, but vigorous evolution of HC CH (HIGHLY FLAMMABLE IN AIR) occurs. The sample had been stored in the absence of air for one year without deterioration. Due to the high flammability of HCCH, the salt should be stored dry and should be treated with care. After long storage, NaCCH can be redissolved in liquid NH3 and used for the same purposes as the fresh material. However it may be slightly turbid due to the presence of moisture. [Rutledge J Org Chem 22 649 1957, Greenlee & Henne J Am Chem Soc 77 5013 1955, Campbell & Campbell Inorg Synth II 76, 81 1946, Org Synth 30 15 1950, Beilstein 1 H 238.] It is available commercially under N2 in Sure/Seal bottles as an 18 wt% solution in xylene/mineral oil. See “Aliphatic Compounds”, Chapter 4, for its prepartion.
