Safety Statements:
24:  Avoid contact with skin 
25:  Avoid contact with eyes

 5,5'-Methylenedisalicylic acid (122-25-8) is a compound which also can be called for 4,4'-Dihydroxy-3,3'-dicarboxydiphenylmethane ; 3, 3'-Methylenebis[6-hydroxybenzoic acid] ; 4,4'-Dihydroxydiphenylmethane-3, 3'-dicarboxylic acid ;  3,3'-Dicarboxy-4,4'-dihydroxydiphenylmethane .It can be used for pharmaceutical intermediates.
5,5'-Methylenedisalicylic acid (122-25-8) is hazardous,so the first aid measures and others should be known.Such as: When on the skin: first,should  flush skin with plenty of water immediatelyfor at least 15 minutes while removing contaminated clothing. Secondly,Get shoesmedical aid . Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.Then get medical aid soon.While ,it's Inhaled: Remove from exposure and move to fresh air immediately.Then you have the ingesting of the product : Wash mouth out with water,and get medical aid immediately.Notes to Physician: Treat supportively and symptomatically. 
In addition, 5,5'-Methylenedisalicylic acid (122-25-8) is not compatible with strong oxidizing agents and you must not take it with incompatible materials.And also prevent it to broken down into hazardous decomposition products: carbon dioxide,carbon monoxide.