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Characteristics of HNS
Vessels Carrying Dangerous Cargo
「Y28」 Stranding Disaster
Date 2005.12.16 21:55
Location The shoal of the Fukuoka AINO island north side
Principal items of a vessel
Kind of Ship
Container ship
Gross tonnage
3,805t
Cargo on board
125 containers
About 100t of three hydrogen
fluoride containers
The characteristic of hydrogen fluoride
Physical form and a color: A colorless liquid
Smell: Pungent smell
Melting point: -83.55℃
Boiling point: 19.54℃ (It is normal temperature and gas.)
Stability: Evaporability is large.
Reactivity: Metal, glass, and a silicate are invaded. It may react with metal and hydrogen and a gas may be generated.
Solubility: It reacts to water with the dissolution and water, and acidity is shown.
Explosiveness: No flammability
Note: White gas can be checked if steam is revealed.
Toxicity
| Substance name |
Acceptable concentration |
Lethal concentration |
| Hydrogen fluoride |
3ppm |
50〜100ppm |
| Ammonia |
100ppm |
2,500ppm |
| Chlorine |
1ppm |
35〜60ppm |
| Chloride |
5ppm |
1,000ppm |
| Sulfurous acid gas |
3ppm |
50〜250ppm |
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