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chloroneb (Demosan, Tersan-SP) Chemical Profile 1/85

                                     chloroneb

      CHEMICAL NAME:      1,4-Dichloro-2,5-dimethoxybenzene (56)

      TRADE NAME(S):      Demosan, Tersan SP (48)

      FORMULATION(S):     65% wettable powder, sometimes combined with thiram
                          (48).

      TYPE:               Organochlorine fungicide

      BASIC PRODUCER(S):  E.I. duPont de Nemours and Co.
                          1007 Market St.
                          Wilmington, DE 19898

      STATUS:             General use

      PRINCIPAL USES:     Soil systemic and supplemental seed treatment for
                          seedling diseases of beans, sugar beets, turf and
                          soybeans.  Excellent against damping-off (48).
                          Used for the treatment of turfgrass to control snow
                          mold (Typhula) and Pythium blight (56).


                                   I.  EFFICACY

           To be developed.


                             II.  PHYSICAL PROPERTIES

      MOLECULAR FORMULA:  C8 H8 Cl2 O2 (26)

      MOLECULAR WEIGHT:   207.1 (26)

      PHYSICAL STATE:     Colorless crystalline solid (pure compound) (26)

      ODOR:               Musty odor (pure compound) (26)

      MELTING POINT:      133-135 C (pure compound) (26)

      BOILING POINT:      268 C (pure compound) (26)

      VAPOR PRESSURE:     3 x 10-3 mmHg at 25 C (pure compound) (26)

      SOLUBILITY:         8 mg/l water at 25 C (pure compound) (26)


                          III.  HEALTH HAZARD INFORMATION

      OSHA STANDARD:  NA

      NIOSH RECOMMENDED LIMIT:  NA

      ACGIH RECOMMENDED LIMIT:  NA

      TOXICOLOGY

           A.  ACUTE TOXICITY

               DERMAL:  LD50 = >5000 mg/kg (rabbit).  A 50% aqueous
                        suspension of the 65% w.p. caused no irritation to
                        guinea-pigs and repeated applications did not
                        result in skin sensitization (26).

               ORAL:    LD50 = >11,000 mg/kg (rat) (26)

           B.  SUBACUTE AND CHRONIC TOXICITY:

           To be developed.

                        IV.  ENVIRONMENTAL  CONSIDERATIONS

           Hazardous to fish and wildlife.  Nonphytotoxic when used as
      directed.  Does not leach from the soil (48).
           The material was not toxic to bluegill Sunfish at 4,200 ppm in the
      48 hour exposure (21e).


                      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.

           SKIN CONTACT:  Wash thoroughly with soap and water (56).

           EYE CONTACT:  Flush immediately with running water and get medical
                         attention if irritation persists (56).


                        VI.  FIRE AND EXPLOSION INFORMATION

           To be developed.

                                VII.  COMPATIBILITY

           Compatible with most other pesticides (48).


                            VIII.  PROTECTIVE MEASURES

      STORAGE AND HANDLING:  Keep out of reach of children.  Avoid breathing
      dust or spray mist.  Avoid contact with skin, eyes, and clothing.  Do
      not reuse container, bury when empty (21e).  Store in a cool, dry place
      (56).


                       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

      21e. Canada Department of Agriculture, Production and Marketing Branch,
               Plant Products Division.  1970.  Memorandum (re:  chloroneb).
               Ottawa, Ontario, Canada.

      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.

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