"DESCALER POWDER is an advanced acid concentrated dry powder formula consisting of a blend of specific acids, wetting agents, corrosion inhibitors, antifoam agents and a color indicator. Its purpose is to remove hard scale and rust deposits from water boilers, diesel engine cooling systems, condensers, evaporators, heat exchangers, pipeline collection systems etc. DESCALER POWDER is similar to DESCALER LIQUID 555 as to its properties and range of applications. However, their differences lie over the fact that DESCALER POWDER is a dry powder formula, which makes it easy and safe to handle and store in awkward conditions. Furthermore, DESCALER POWDER is safe to use on sensitive metals and their alloys such as Zinc, Lead, Aluminum, Tin etc."
http://www.pikasoma.lt/?en=1172829132
"2,4-D ACIDE EN POUDRE SÈCHE. HERBICIDE. POUR USAGE DANS LA FABRICATION, LA PRÉPARATION OU LE ... 2,4-D (présent sous forme d'acide)… 97,5% ..."
http://pr-rp.pmra-arla.gc.ca/PR_SOL/pr_web.ve2?p_ukid=1368

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Note added at 9 mins (2009-06-16 12:39:22 GMT)
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"Détartrant en poudre composé d'acides organiques et d'inhibiteurs de corrosion. Recommandé pour les opérations de détartrage en présence d'acier inoxydable. ... Détergent acide concentré destiné à l'élimination des résidus de béton ou de ciment. ... Dosage : 20 % dans l'eau en pulvérisation par temps sec. ..."
http://www.edgb2b.com/CORROBAN-116567-profil-fr-societe.html