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EC number: 282-784-6 | CAS number: 84418-71-3
Aluminium 7075-T6 (50 x 25 x 1.6mm)
#213 Fully immersed
#212 Half immersed
#211 Vapour space
Appearance after 7 days
Lightly coated with black film which washed off leaving surface whiteish & dull.
Immersed half as #213. Vapour space halfbright & shiny, pristine condition.
Very slight localized dull staining. Otherwise bright & shiny.
Initial weight (g)
Final weight (g)
Weight loss (mg)
Weight loss (%)
Corrosion rate (mils/year)
Corrosion rate (µ/year)
Corrosion rate (mm/year)
Steel S275J2G3 (50 x 25 x 3mm)
#33 Fully immersed
#32 Half immersed
#31 Vapour space
Coated with black film which washed off leaving surface dark grey & dull.
Immersed half as #33. Vapour space half as #31
Bright & shiny, pristine condition
Coupons of metal (aluminium and steel) were exposed to Rhodaphac AAP in diferents conditions (fully immersed, half immersed and suspended in the vapour space) following the UN classification procedure, test methods and criteria relating to substances of class 8, Test C1. The experimental vessel was heated at 55°C for 7 day.
In this condition, the fully immersed coupons were equivalent to maximum corrosion rates of
+ 0.83 mm/year for steel
+ 0.30 mm/year for aluminium
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