日韩人妻无码一区二区三区综合部,久久久一本精品99久久精品,关晓彤国产精品换脸

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            1. Product
               

              Succinic Anhydride

               

               

              Additional name:

               

               

              Succinic acid anhydride; Succinyl oxide; Bernsteinsaure anhydride; Butanedioic anhydride; Dihydro-2.5-furandione

              CAS: 108-30-5
              Molecular formula: CH2CH2COOCO             C4H4O3

              Structure type:

              Molecular weight: 100.08
              Properties: colorless acicular crystals or granules. Soluble in ethanol, chloroform and carbon tetrachloride; slightly soluble in water and ethyl ether. Decomposes in hot water to succinic acid. mp 119.6, bp 261℃, d 1.503.
              Precaution: uccinic anhydride is irritating to eye and mucosa. Wash with large amount of water in case of eye contact. Seek medical attention if needed.
              Use: as analytical reagent; in manufacturing drug, agrochemcial, resin, etc.
              Packaging & Storage: plastic lined woven bag, net weight 25kg. Store in a cool dry place.


              Specification:
               

               
              A.R.
              C.P.
              Medicine grade
              Tech. grade
              Appearance
              white crystals
              white crystals
              white crystals
              white to light yellow crystals
              Assay %
              99.0-100.5
              98.0-100.5
              99.0
              98.0
              mp ℃
              118-122
              118-122
              117-121
              116-121
              Water dissolution test
              pass
              pass
              /
              /
              Residue on ignition %
              0.005
              0.01
              0.1
              0.2
              Cl %
              0.03
              0.2
                
                 
              Color (APHA) %
                
                  
              50
              100
              Pb %
                 
              0.001
              0.002
                 
              As %
                 
              0.0002
              0.0005
                 
              Fe %
                 
              0.0005
              0.001
                 
              KMnO4 test (0.1N ml/g)
                 
              1
              2
                 





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              日韩人妻无码一区二区三区综合部,久久久一本精品99久久精品,关晓彤国产精品换脸