Metiram

  • Zinc ammoniate ethylenebis(dithiocarbamate)-poly(ethylenethiuram disulfide)
  • Polyram
  • Polymarcine
  • Polycarbacine
Formula
Unspecified
Description
Yellow powder.
Uses
Control of a wide range of diseases on many crops, eg. Scab on pome fruit, shot-hole on stone fruit, rust on currants and plums, downy mildew, red fire disease, and black rot on vines, phytophthora late blight on potatoes and tomatoes, septoria leaf spot on celery and celeriac, downy mildew on head lettuce, rust on mildews and rusts on ornamentals, diseases of cotton, peanuts, pecans, etc. Used in forestry to combat need cast in conifers. Also used as a seed treatment for control of emergence diseases of vegetables and ornamentals.

Registry Numbers and Inventories.
CAS
9006-42-2
RTECS
TR6250000
RTECS class
Agricultural Chemical and Pesticide; Mutagen
UN (DOT)
2771
Beilstein/Gmelin
NA
RCRA
U114
EPA OPP
14601
Swiss Giftliste 1
G-2536
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Melting point, °C
156
Density
1.86 g/cm3 (20 C)
Solubility in water
practically insoluble
Partition coefficient, pKow
0.3 @ pH 7

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
Stable at 30 C. Slowly decomposed by light. Non-hygroscopic. Decomposed by strong acids and strong alkalis.
Incompatibilities
Incompatible with acids, peroxides, and acid halides.

Fire.
Fire fighting
Use method most appropriate to fight surrounding fire.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Carcinogin
CP65
Poison_Class
4
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
   Skin
Avoid any skin contact. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Pesticides - remove contaminated clothing and jewelry. Wash the skin, including hair and nails, vigorously; do repeated soap washings. Discard contaminated clothing. Irritation - treat dermal irritation or burns with standard topical therapy
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
2771
Response guide
Hazard class
6.1
Packing Group
I; II; III