MSDS

Monsanto Company, Lawn & Garden Products
Page: 5 / 10
Roundup Weed & Grass Killer Concentrate Plus Version: 1.0 Effective date: 12/15/2010
pH: 4.6
Partition coefficient: log Pow: -3.2 @ 25 °C (glyphosate)
Partition coefficient: log Pow: -4.60 @ 20 °C (diquat dibromide)
10. STABILITY AND REACTIVITY
Stability
Stable under normal conditions of handling and storage.
Oxidizing properties
No data.
Materials to avoid/Reactivity
Reacts with galvanised steel or unlined mild steel to produce hydrogen, a highly flammable gas that could explode.
Hazardous decomposition
Thermal decomposition: Hazardous products of combustion: see section 5.
Self-accelerating decomposition temperature (SADT)
No data.
11. TOXICOLOGICAL INFORMATION
This section is intended for use by toxicologists and other health professionals.
Data obtained on product and components are summarized below.
Acute oral toxicity
Rat, female, LD50 (Method: Up-and-down procedure (OECD 425)): > 5,000 mg/kg body weight
Practically non-toxic.
FIFRA category IV.
No mortality.
Acute dermal toxicity
Rat, LD50: > 5,000 mg/kg body weight
Practically non-toxic.
FIFRA category IV.
No mortality.
Acute inhalation toxicity
Rat, LC50, 4 hours, aerosol: > 2.05 mg/L
Practically non-toxic.
FIFRA category IV.
No mortality. For purposes of the inhalation test, product was artificially aerosolized. Since this material will
not become aerosolized to a hazardous concentration during transport, it is classified as non-hazardous under the
transportation regulations in accordance with 2.6.2.2.4.7(b) and (c) of the UN Recommendations on the
Transport of Dangerous Goods.
Skin irritation
Rabbit, 3 animals, OECD 404 test:
Days to heal: 3
Primary Irritation Index (PII): 0.5/8.0
Slight irritation.
FIFRA category IV.
Eye irritation
Rabbit, 3 animals, OECD 405 test:
Days to heal: 7
Moderate irritation.
FIFRA category III.