Sodium salt 4-CPA
|4-Chlorophenoxyacetic acid sodium salt|
|Acetic acid, 2-(4-chlorophenoxy)-, sodium salt (1:1)|
Boiling point 315.2 C at 760mmHg
DHS melting point 156.5 C
Molecular formula C8H6ClNaO3
The molecular weight 208.574
Flash point 144.4 DHS C
Precise mass 207.990311
The vapor pressure of 0.000188 mmHg at 25 ° C
Stable under normal temperatures and pressures.
MAX ABSORPTION (WATER, 0.1 N HYDROCHLORIC ACID): 278 NM (LOG E= 3.11); 284 NM SHOULDER (LOG E= 3.01); SADTLER REFERENCE NUMBER: 259 (IR, GRATING)
IR: 13139 (Sadtler Research Laboratories Prism Collection)
UV: 457 (Sadtler Research Laboratories Spectral Collection)
NMR: 500 (Varian Associates NMR Spectra Catalogue)
MASS: 30149 (NIST/EPA/MSDC Mass Spectral database, 1990 version)
Intense mass spectral: 141 m/z, 200 m/z
Mode of action
Sodium salt 4-CPA can be absorbed by plant root, stem, leaf, flower, fruit. The biological activity duration is long.
Its main functions are as follow:
To form seedless fruits.
To promote fruit set and fruit enlargement;
As plant growth regulator, it can be absorbed by plant via root, stem, leaf, bloom
1. Sodium salt 4-CPA is used to prevent abscission of bloom and fruit, inhibit rooting of beans,Single use: 10-30 mg/L, spray flower or deal with fruit, promote fruit setting.
promote fruit set, induce formation of seedless fruit, through flower spraying.
2. Sodium salt 4-CPA can be used for ripening and fruit thinning.
3. Sodium salt 4-CPA also has herbicidal effect at high dosage.