8.20451

2,4-Dichlorophenoxyacetic acid

for synthesis

• Synonym(s): 2,4-Dichlorophenoxyacetic acid, 2,4 D-acid
• Linear Formula: 2,4-(Cl)₂C₆H₃OCH₂COOH
• CAS Number: 94-75-7
• Molecular Weight: 221.04
• MDL number: MFCD00004300
• EC Index Number: 202-361-1

Properties

• vapor pressure: <0.01 hPa
• Quality Level: 200; 300
• assay: ≥98.0% (acidimetric)
• form: solid
• potency: 375 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rabbit)
• bp: 160 °C/0.53 hPa
• mp: 134-137 °C
• solubility: 0.3 g/L
• density: 1.42 g/cm³ at 25 °C
• bulk density: 720 kg/m³
• storage temp.: 2-30°C
• InChI: 1S/C8H6Cl2O3/c9-5-1-2-7(6(10)3-5)13-4-8(11)12/h1-3H,4H2,(H,11,12)
• InChI key: OVSKIKFHRZPJSS-UHFFFAOYSA-N

Description

Analysis Note

Assay (acidimetric): ≥ 98.0 %
Melting range (lower value): ≥ 134 °C
Melting range (upper value): ≤ 140 °C
Identity (IR): passes test

Safety Information

• Pictograms: 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 Classifications: Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 3 - Eye Dam. 1 - Skin Sens. 1 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable