Ministry of Agriculture and Lands

Toxicity & Hazard

Relative Toxicity Categories

Mammals (people)

Relative Toxicity Category Oral LD50 (mg/kg) Dermal LD50 (mg/kg)
Slightly Toxic > 500 > 1000
Moderately Toxic 51 - 500 201 - 1000
Very Toxic 0 - 50 0 200

Birds

Relative Toxicity Category Acute Oral Toxicity (mg/kg) Dermal  (ppm)
Practically non toxic > 2000 >5000
Slightly Toxic 501 - 2000 1001 5000
Moderately Toxic 51 - 500 501 1000
Highly Toxic 10 - 50 50 500
Very Highly Toxic < 10 < 50

Bees

Relative Toxicity Category Description
Highly Toxic Kills on contact during application and for one or more days after.
Moderately Toxic Kills bees if applied over them.  Can be used with limited danger to bees if no applied over bees in the field or hives.  Correct dosage, timing and method of application are essential.
Practically non toxic Relatively non toxic.  Can be used with few precautions with minimum injury to bees.

Fish

Relative Toxicity Category ppm
Practically Non Toxic > 100
Slightly Toxic 10 - 100
Moderately Toxic 1 - 10
Highly Toxic 0.1 - 1
Very Highly Toxic < 0.1