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Product introduction
物理描述 | 亚硫酸呈无色液体,有刺鼻的燃烧硫气味。对金属和组织有腐蚀性。
Chinese name
亚硫酸
English name
sulfurous acid
Chinese alias
-
English alias
Sulfurdioxide solution; Sulfurous acid (H2SO3)
CAS number
7782-99-2
molecular formula
H2O3S
molecular weight
82.08
Exact mass
-
PSA
76.7
Logp
-0.5
Safety
  • DOT label: 腐蚀性
  • Health hazard: ERG2024,指南154(亚硫酸):· 灭火或稀释水产生的径流可能具有腐蚀性和/或毒性,并造成环境污染。
  • Hazard summary: 约6%二氧化硫的水溶液;逐渐被空气氧化形成硫酸;腐蚀性;强氧化剂;引起灼伤;[CAMEO] 人食入0.5 mg/kg会引起腹泻、其他胃肠道变化以及恶心或呕吐;[RTECS] 引起灼伤;吸入有害;[Alfa Aesar MSDS] 见二氧化硫和硫酸。
  • reactive group: 还原剂,弱
  • First aid measures: ERG2024,指南154 (亚硫酸):在加拿大,可能需要为该产品制定应急响应援助计划(ERAP)。请参阅运输单和/或"ERAP"部分。
  • Harmful effect: 毒性肺炎 - 因吸入金属烟雾或有毒气体和蒸汽引起的肺部炎症。
  • fire hazard: ERG2024,指南154(亚硫酸):· 对于电动汽车或设备,还应查阅指南147(锂离子或钠离子电池)或指南138(钠电池)。
  • fire fighting: FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. (ERG, 2024)
  • reactivity profile: 无色、腐蚀性、中等毒性液体。加热分解时释放有毒的硫氧化物烟雾[Lewis,第3版,1993年,第1196页]。
  • Isolation and evacuation: 疏散:ERG2024,指南154 (亚硫酸):· 如果罐车、铁路罐车或公路罐车涉及火灾,应在所有方向上隔离800米(1/2英里);同时,考虑在所有方向上初始疏散800米(1/2英里)。
  • DOT ID and Guide: 1833 154
  • Air and water reaction: 溶于水并释放热量。
  • Hazard categories and classifications: 腐蚀性物质
  • Non-fire leakage response: 消除所有点火源(禁止吸烟、火焰、火花或明火)于立即区域。除非穿戴适当的防护服,否则不要触摸损坏的容器或泄漏物质。如果可以在不冒险的情况下,停止泄漏。防止进入水道、下水道、地下室或密闭区域。用干土、沙子或其他不可燃材料吸收或覆盖并转移到容器中。不要让水进入容器。(ERG, 2024)
  • Personal protective equipment (PPE): 佩戴正压自给式呼吸器(SCBA)。在没有火灾风险时,佩戴制造商特别推荐的化学防护服。结构消防员的防护服提供热保护,但仅提供有限的化学保护。(ERG,2024)
  • Protective Action Standards (PAC): PAC-3:30 [mg/m3]
  • DOT Hazard Classification: Placard/Label(s)
  • Accidental Release Measures: 泄漏:ERG2024,指南154(亚硫酸):· 不要让水进入容器内。
  • Emergency Response Planning Guidelines: 应急响应:ERG2024,指南154(亚硫酸):· 始终远离直接接触火焰的储罐。
  • Exposure Control and Personal Protection: 防护装备:ERG2024,指南154(亚硫酸):· 结构性消防员防护服提供热保护,但仅提供有限的化学保护。
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Research chemical 5%

Research chemical 5%; supplied for laboratory research, analysis, inspection, and scientific procurement use; specifications: 5%.

item number:S299035-2.5L
Product model:2.5L
level: 5%
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