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Bispyribac-Sodium

1- Development
2- Physical and Chemical Properties
3- Acute Toxicity
4- Formulations contain this active ingredient
5- Toxicity classification

6- First Aid

7- Exposure Guidelines
Development
Discovered in 1988. Reported by Kumiai Chemical Industry Co., Ltd (M. Yokoyama et al., Proc. Br. Crop Prot. Conf. - Weeds, 1993, 1, 61). Developed jointly by Kumiai and Ihara Chemical Industry Co., Ltd and introduced in 1997.
Physical and Chemical Properties
Chemical class
pyrimidinyloxybenzoic
Belong to
List No. I
Chemical structure
Bispyribac-Sodium chemical structure
CAS RN
 [125401-75-4] for acid; [125401-92-5] for sodium salt

Chemical Abstract Name

sodium 2,6-bis[(4,6-dimethoxy-2-pyrimidinyl)oxy]benzoate
IUPAC name

sodium 2,6-bis(4,6-dimethoxypyrimidin-2-yloxy)benzoate

Chemical fomula
C19H17N4NaO8; C19H18N4O8 for the acid
Form
White powder.
Melting Point
223-224 °C 
Henry's Constant
3.12 x 10-11 Pa m3 mol-1
Vapour Pressure
5.05 x 10-6 mPa (25 °C)
Specific Denisty
Bulk density 0.0737 (20 °C, CIPAC MT 3)
Solubility
In water 73.3 g/l (25 ؛C). In methanol 26.3, acetone 0.043 g/l (25 °C).
Stability
Stable in water; DT50 >1 y (pH 7 & 9), 448 h (pH 4). Stable to light. Not decomposed after 14 d at 55 °C
Acute toxicity
Oral LD50  mg/kg bwt.
Animal
Male
Female
Rat
4111
2635
Mice
3524
3524
rabbite
 
Dermal LD50 mg/kg bwt.
Animal
Male
Female
Rat
>2000
Gonia big    
rabbite
 
Formulations contain this active ingredient
Trade name
registration No
Nominee 2 % SL  
Toxicity classification
WHO Classification U

Definition

Product unlikely to present acute hazard
in normal use
color code Green
First Aid
IF ON SKIN OR CLOTHING: Wash material off the skin in flowing water or shower with soap. If irritation persists, consult a physician immediately.
IF IN EYES: mmediately flush with copious amount of water for at least 15 minutes.
IF SWALLOWED:   Induce vomiting by giving one or two glasses of water. Get a medical attention immediately. If the victim is unconscious or having convulsions,never give fluids nor induce vomiting
IF INHALED: Remove the victim to fresh air and keep him warm and quiet. Get a medical attention immediately. If not breathing, clear the airway and give artificial respiration. If breathing is difficult, give oxygen.
 
Exposure Guidelines:
ADI:0.011 mg/kg
RfD: 
 
Ministry of AgricultureCAPL
 

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