§ 173.195 Hydrogen cyanide, anhydrous, stabilized (hydrocyanic acid, aqueous solution).
发布08-07
生效09-08
摘要总结AI 辅助解读
该条款规定了无水稳定氢氰酸（水溶液）在美国运输时的包装要求。核心内容包括：必须使用特定规格的钢瓶或UN压力容器，严禁使用UN管束和MEGCs；充装量严格限制为每磅水容量不超过0.6磅液体；发货前必须进行泄漏测试（如使用苦味酸钠试纸），确保绝对无泄漏。此规定直接约束危险品出口及美国境内转运的合规操作。
- (a) Hydrogen cyanide, anhydrous, stabilized, must be packed in specification cylinders or UN pressure receptacles as follows:
- (1) As prescribed in § 173.192;
- (2) Specification 3A480, 3A480X, 3AA480, or 3A1800 metal cylinders of not over 126 kg (278 pounds) water capacity (nominal);
- (3) Shipments in 3AL cylinders are authorized only when transported by highway and rail; or
- (4) UN cylinders, as specified in part 178, with a minimum test pressure of 100 bar and a maximum filling ratio of 0.55. The use of UN tubes and MEGCs is not authorized.
- (b) Cylinders may not be charged with more than 0.27 kg (0.6 pound) of liquid per 0.45 kg (1 pound) water capacity of cylinder. Each filled cylinder must be tested for leakage before being offered for transportation or transported and must show absolutely no leakage; this test must consist of passing a piece of Guignard's sodium picrate paper over the closure of the cylinder, without the protection cap attached, to detect any escape of hydrogen cyanide from the cylinder. Other equally efficient test methods may be used in place of sodium picrate paper.
- (c) Packagings for hydrogen cyanide must conform to § 173.40.
[Amdt. 173-224, 55 FR 52643, Dec. 21, 1990, as amended at 56 FR 66271, Dec. 20, 1991; 71 FR 33880, June 12, 2006]