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chloramben (Amiben) Herbicide Profile 2/85

                                     chloramben
      CHEMICAL NAME:      3-Amino-2,5-dichlorobenzoic acid (56)
      TRADE NAME(S):      Amiben (56)
      FORMULATION(S):     Liquid, 2 pounds acid equivalent/gallon as ammonium
                          salt; granular, 10% acid equivalent as ammonium
                          salt.  Dry soluble 75% acid equivalent powder as
                          sodium salt (56).
      TYPE:               Preemergence herbicide (56)
      BASIC PRODUCER(S):  Union Carbide Agricultural Products Co., Inc.
                          P.O. Box 12014
                          T. W. Alexander Dr.
                          Research Triangle Park, NC 27709
      STATUS:             General use
      PRINCIPAL USES:  For preemergence weed control.  Applied at planting
      of soybeans, dry beans, peanuts, sunflowers, corn, sweet potatoes, lima
      beans, seedling asparagus, squash, and pumpkins.  The granular
      formulation is also registered for use on established tomatoes,
      peppers, and ornamentals (56).
                                   I.  EFFICACY
           Amiben controls the following important annual grass and broadleaf
      weeds:
      barnyardgrass (water grass)               kochia
      carpetweed                                lambsquarters, common
      chickweed, annual                         mustard, wild
      coffeeweed (sesbania)                     nightshade, black
      crabgrass, hairy (large)                  pigweeds
      crabgrass, smooth                         prickly sida (teaweed)
      fall panicgrass                           purslane (pusley)
      Florida beggarweed                        ragweed, common
      foxtail, giant                            Russian thistle
      foxtail, green                            smartweed, Pennsylvania
      foxtail, yellow                           spurge, annual
      goosegrass (silver crabgrass)             stinkgrass
      johnsongrass-seedling                     velvetleaf (buttonweed) (32c)
                             II.  PHYSICAL PROPERTIES
      MOLECULAR FORMULA:   C7 H5 Cl2 NO2 (62)
      MOLECULAR WEIGHT:    206.0 (62)
      PHYSICAL STATE:      Colorless crystalline solid (pure compound);
                           purplish-white powder (technical product, c. 90%
                           pure) (26).
      ODOR:                Odorless (pure compound) (58)
      MELTING POINT:       200-201 C (pure compound); >195 C (technical
                           product (26)
      VAPOR PRESSURE:      c. 7 x 10-3 mmHg at 100 C (pure compound) (26)
      SOLUBILITY:          700 mg/l water at 25 C (pure compound) (62)
                          III.  HEALTH HAZARD INFORMATION
      OSHA STANDARD:  NA
      NIOSH RECOMMENDED LIMIT:  NA
      ACGIH RECOMMENDED LIMIT:  NA
      TOXICOLOGY
           A.  ACUTE TOXICITY
               DERMAL:  LD50 = >3160 mg/kg (rat); a single application of
                          3 mg caused a mild irritation which subsided
                          within 24 hours (62).
               ORAL:     LD50 = 5620 mg/kg (male rat) (26)
           B.  SUBACUTE AND CHRONIC TOXICITY:
           In 2-year feeding trials rats receiving 10,000 mg/kg diet suffered
      no adverse effect (62).
                        IV.  ENVIRONMENTAL  CONSIDERATIONS
           Moves readily in sandy soils or following heavy rains.  Broken
      down by microorganisms.  Some photochemical loss in aqueous solution.
      On moist soil loss reported but soil must remain moist for loss to
      occur.
           Resultant average persistence at recommended rates:  Approximately
      6 to 8 weeks (58).
           Not toxic to fish or wildlife when used as directed (58).
                      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.
      SYMPTOMS OF POISONING:  None ever experienced (58).
                        VI.  FIRE AND EXPLOSION INFORMATION
           Nonflammable (58).
                                VII.  COMPATIBILITY
           Hard water compatible.  Mixes with most other pesticides in dilute
      solution.  Noncorrosive (58).
                            VIII.  PROTECTIVE MEASURES
      STORAGE AND HANDLING:  No shelf life limitations.  Light tends to
      develop more red color.  Unaffected by temperatures to the boiling
      point.  If exposed to freeze-thaw cycles, the formulation should be
      agitated before use (58).  Avoid contact with skin, eyes or clothing.
      Avoid spray drift to adjacent crops as injury may result.  Do not
      store near fertilizers, seeds, insecticides, or fungicides.  Do not
      contaminate water used for irrigation or domestic purposes by cleaning
      of equipment or disposal of waste (32c).
                       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.
      32c. Union Carbide Agricultural Products Company, Inc., Product
               Development.  1979.  Information sheet:  Amiben chloramben
               herbicide, label amendments.  Ambler, PA.
      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.
      58.  Weed Science Society of America, Herbicide Handbook Committee.
               1983.  Herbicide handbook of the weed science society of
               America, 5th ed.  Weed Science Society of America, Champaign,
               IL.  515 pp.
      62.  The Pesticide Manual:  A World Compendium, 7th ed.  1983.  C.R.
               Worthing, ed.  The British Crop Protection Council, Croydon,
               England.  695 pp.
      2/8/85