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Metiram (Polyram) - Chemical Profile 2/85

                                      metiram

      CHEMICAL name:      Tris[ammine[ethylenebis(dithiocarbamato)]zinc(2+)]
                          [tetrahydro-1,2,4,7-dithiadiazocine-3,8-dithione],
                          polymer (56).

      TRADE name(S):      Polyram (56)

      FORMULATION(S):     80% wettble powder, 7% dust, potato seed treater
                          (48)

      TYPE:               Carbamate fungicide

      BASIC PRODUCER(S):  FMC Corp.
                          Agricultural Chemical Group
                          2000 Market St.
                          Philadelphia, PA 19103

      STATUS:             General use

      PRINCIPAL USES:     Foliar protectant against a wide variety of
      diseases on apples, asparagus, potatoes, and sweet corn (48).
            Polyram controls diseases on apples, asparagus, peanuts, pecans,
      potatoes, sweet corn, vegetables and ornamentals (56).

                                   I.  EFFICACY

           Ineffective on established fungi; good residual life (48).

                             II.  PHYSICAL PROPERTIES

      PHYSICAL STATE:  Yellowish powder (pure compound) (26)

      MELTING POINT:   Begins to decompose c. 140 C (pure compound) (26)

      SOLUBILITY:      Practically insoluble in water (pure compound) (26)

                          III.  HEALTH HAZARD INFORMATION

      OSHA STANDARD:  NA

      NIOSH RECOMMENDED LIMIT:  NA

      ACGIH RECOMMENDED LIMIT:  NA

      TOXICOLOGY

           A.  ACUTE TOXICITY

               ORAL:  LD50 = >10,000 mg/kg (rat) (26)

           B.  SUBACUTE AND CHRONIC TOXICITY:

           In feeding trials:  rats receiving 10,000 mg/kg diet, but not
      those 1000 mg/kg diet, for 14 days showed an increase in thyroid weight
      and decreased uptake of iodide; no ill-effect was observed for dogs
      receiving 45 mg/kg daily for 90 days, or 7.5 mg/kg daily for 1.92 yr
      (26).

                        IV.  ENVIRONMENTAL  CONSIDERATIONS

           Some hazard to fish.  Nonhazardous to honey bees.  Generally
      nonphytotoxic, however some injury to grapes and apples at excessive
      rates has occurred (48).
           The LC50 (and exposure period) for harlequin fish is 32 mg/l (24
      hr) and 17 mg/l (48 hr) (26).

                      V.  EMERGENCY AND FIRST AID PROCEDURES

           The chemical information provided below has been condensed
      from original source documents, primarily from "Recognition and
      Management of Pesticide Poisonings", 3rd ed. by Donald P.  Morgan,
      which have been footnoted.  This information has been provided in
      this form for your convenience and general guidance only.  In
      specific cases, further consultation and reference may be required
      and is recommended.  This information is not intended as a sub-
      stitute for a more exhaustive review of the literature nor for the
      judgement of a physician or other trained professional.

           If poisoning is suspected, do not wait for symptoms to develop.
      Contact a physician, the nearest hospital, or the nearest Poison
      Control Center.

           To be developed.

                        VI.  FIRE AND EXPLOSION INFORMATION

           To be developed.

                                VII.  COMPATIBILITY

           Compatible with most pesticides except parathion-oil sprays, fixed
      coppers and highly alkaline materials (48).

                            VIII.  PROTECTIVE MEASURES

           To be developed.

                       IX.  PROCEDURES FOR SPILLS AND LEAKS

                     IN CASE OF EMERGENCY, CALL, DAY OR NIGHT
                                  (800) 424-9300
                      PESTICIDE TEAM SAFETY NETWORK/CHEMTREC

                               X.  LITERATURE CITED

      26.  The Pesticide Manual:  A World Compendium, 6th ed.  1979.  C. R.
               Worthing, ed.  The British Crop Protection Council, Croydon,
               England.  655 pp.

      48.  Harding, W.C.  1979-80.  Pesticide profiles, part two:  fungicides
               and nematicides.  Univ. Maryland, Coop. Ext. Service Bull.
               283, 22 pp.

      56.  Farm Chemicals Handbook, 70th ed.  1984.  R. T. Meister, G. L.

               Berg, C. Sine, S. Meister, and J. Poplyk, eds.  Meister
               Publishing Co., Willoughby, OH.

      2/1/85