Home Categories Chemical pesticides 2,4-Dichlorophenoxyacetic acid
A3140912

2,4-Dichlorophenoxyacetic acid , 97% , 94-75-7

Synonym(s):
2,4 D-acid;2,4-D;2,4-Dichlorophenoxyacetic acid;2,4-Dichlorophenoxyacetic acid solution

CAS NO.:94-75-7

Empirical Formula: C8H6Cl2O3

Molecular Weight: 221.04

MDL number: MFCD00004300

EINECS: 202-361-1

Pack Size Price Stock Quantity
25G RMB45.60 In Stock
100G RMB67.20 In Stock
500G RMB149.60 In Stock
2.5KG RMB516.80 In Stock
others     Enquire
Update time: 2022-07-08

PRODUCT Properties

Melting point: 136-140 °C (lit.)
Boiling point: 160 °C (0.4 mmHg)
Density  1.563
vapor pressure  0.4 mm Hg ( 160 °C)
refractive index  1.5000 (estimate)
Flash point: 160°C/0.4mm
storage temp.  2-8°C
solubility  Soluble in organic solvents (ethanol, acetone, dioxane)
pka pK1:2.64 (25°C)
form  crystalline
color  off-white to tan
PH Range Acidic
Odor Threshold 3.13 ppm
Water Solubility  Slightly soluble. Decomposes. 0.0890 g/100 mL
Merck  14,2796
BRN  1214242
Henry's Law Constant 6.72 and 0.84 x 10-5 atm?m3/mol were reported at pH values of 1 and 7, respectively (wetted-wall column, Rice et al., 1997a)
Exposure limits NIOSH REL: TWA 10 mg/m3, IDLH 100 mg/m3; OSHA PEL: TWA 10 mg/m3; ACGIH TLV: TWA 10 mg/m3.
Stability: Stable, but moisture-sensitive and may be light-sensitive. Incompatible with strong oxidizing agents, corrodes many metals. Decomposes in water.
LogP 2.810

Description and Uses

2,4-D free acids, esters, amines, and salts are formulated in water suspensions or solutions, or in various organic solvents, for application as systemic herbicides that are used postemergence for selective control of broadleaf weeds.

2,4-D is registered with the US Environmental Protection Agency (EPA) for use on a variety of food/feed sites, turf, lawn, aquatic sites, and forestry applications, and as a growth regulator in citrus crops. Residents and professional applicators may use 2,4-D on home lawns.

Safety

Symbol(GHS) 
GHS05,GHS07,GHS09
Signal word  Danger
Hazard statements  H302-H317-H318-H335-H410
Precautionary statements  P261-P273-P280-P301+P312-P302+P352-P305+P351+P338
Hazard Codes  Xn,Xi,T,F
Risk Statements  22-37-41-43-52/53-39/23/24/25-23/24/25-36/37/38-11-36-20/21/22-67-66
Safety Statements  24/25-26-36/37/39-46-61-2-45-36/37-27-16-7-9
OEB B
OEL TWA: 10 mg/m3
RIDADR  UN 3077 9/PG 3
WGK Germany  2
RTECS  AG6825000
Autoignition Temperature > 180 °C
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29189090
Toxicity LD50 (oral): rat [free] 375 mg/kg, [-Na] 666-805 mg/kg.
IDLA 100 mg/m3

RELATED PRODUCTS