Hydrogen cyanide (formerly known as prussic acid) is a chemical compound with the formula HCN and structural formula H−C≡N. It is a highly toxic and flammable liquid that boils slightly above room temperature, at 25.6 °C (78.1 °F).

2025年3月15日 · Hydrogen cyanide, also known as hydrocyanic acid, or Hcn, is a highly volatile liquid used to prepare acrylonitrile, which is used in the production of acrylic fibres, synthetic rubber, and plastics. Cyanides are used in many chemical processes, including fumigation, case hardening of iron and steel, electroplating, and the concentration of ores.

氰化氢，是一种无机化合物，化学式HCN，标准状态下为液体。 氰化氢易在空气中均匀弥散，在空气中可燃烧，当氰化氢在空气中的含量达到5.6%～12.8%时，具有爆炸性。

Hydrogen cyanide (HCN) is a colorless, rapidly acting, highly poisonous gas or liquid that has an odor of bitter almonds. Most HCN is used as an intermediate at the site of production. Major uses include the manufacture of nylons, plastics, and fumigants.

Hydrogen cyanide (HCN) and cyanide salts (CN salts) can cause male reproductive toxicity according to The Environmental Protection Agency (EPA). Hydrogen cyanide, anhydrous, stabilized appears as a chemical warfare blood agent. …

2020年12月31日 · ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Hydrogen cyanide and cyanide salts, as CN. See annual publication for most recent information. Agency for Toxic Substances and Disease Registry (ATSDR): Toxicological Profile for Cyanide (Update). PHS, U.S. DHHS, Atlanta, GA, 1997.

At room temperature, hydrogen cyanide is a volatile, colorless-to-blue liquid (also called hydrocyanic acid). It rapidly becomes a gas that can produce death in minutes if breathed.

hydrogen cyanide is a colorless or pale-blue liquid (hydrocyanic acid); at higher temperatures, it is a colorless gas. Hydrogen cyanide is very volatile, producing potentially lethal concentrations at room temperature. The vapor is flammable and potentially explosive. Hydrogen cyanide has a faint, bitter almond odor and a bitter, burning taste.

氢氰酸（hydrocyanicacid），又称氰化氢，是一种无色至微黄色、易燃、极易挥发的水溶性液体。 氢氰酸这个名字来自早期提取的六氰基铁酸铁（普鲁士蓝），一种耐光的深蓝色颜料。 氢氰酸 (氰化氢)可视为甲酸的腈（腈碳与羧基碳的氧化态相同），故俗名甲酸腈。 摩尔质量：27.03gmol 密度：0.69克厘米 熔点：−13°C 沸点：26℃ 蒸汽压力：817百帕 (20°C) 溶解度：与水完全混溶 在高纯... 氢 氰酸（hydrocyanic acid），又称<SP an style="color: #262626;font-family: var (- …

Properties: Colorless gas or liquid; characteristic odor. Burns in air with a blue flame. Flammable. Intensely poisonous even when mixed with air. Must be handled by specially trained experts. mp -13.4°. bp 25.6°. d (gas) 0.941 (air = 1); d (liq) 0.687. Very weakly acid (does not redden litmus). Miscible with water, alc; slightly sol in ether.