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EC number: 222-657-4 | CAS number: 3567-69-9
Endpoint summary
Administrative data
Description of key information
Adsorption\ Desorption
Various experimental data for the target compound were reviewed for the Adsorption end point which are summarized as below:
The adsorption coefficient Koc in soil and in sewage sludgeDisodium 4-hydroxy-3-[(4-sulphonatonaphthyl)azo]naphthalene sulphonate(CAS No.3567-69-9)was determined by the Reverse Phase High Performance Liquid Chromatographic method according to OECD Guideline No. 121 for testing of Chemicals. The reference substances were chosen according to structural similarity with the test substance and calibration graph was prepared. The reference substances were Phenol, Toluene, Xylene, Ethylbenzene, Naphthalene, Phenenthrene having Kocvalue ranging from 1.32 to 4.09 TheLog Kocvalue was determined to be3.313 ± 0.007at 25°C.Thus based on the result it is concluded that the test substance has a strong sorption to soil and sediment and therefore has negligibleto slowmigration potential to ground water.
The adsorption coefficient of chemical acid red 14 was studied by using Freundlich adsorption isotherm. The aim of the investigation is to determine the adsorption behavior of azo dyes in aqueous solution on DG06, GSE17200, and GSE17201 soils using C. I. Acid Red 14. GSE17200 and GSE17201 soils were obtained from Bayer Landwirtschaftszentrum, Monheim, Germany. DG06 soil was sampled in the surface layers (0– 20 cm) located in Dalian, Liaoning Province, China. Three kinds of soils were air-dried, sieved to 2 mm and stored in dark at a room temperature (20 ±1°C). The effect of initial dye concentration on the dye adsorption capacity was investigated between 100 and 800 mg/L at 20 ± 0.5°C. The dye uptake efficiencies of AR14 on DG06, GSE17200, and GSE17201 soils are high, and they are 21.9%, 10.4%, and 8.0%, respectively. By using Freundlich adsorption isotherm, Kf(Freundlich Constants)values were found to be 7.1*10-3 L/mg, 4.8*10-3L/mg, and 3.2*10-3L/mg forDG06, GSE17200, and GSE17201 soils respectively indicating high adsorption capacity of chemical Acid red 14.
On the basis of above results for target chemical, it can be concluded that the test substanceDisodium 4-hydroxy-3-[(4-sulphonatonaphthyl)azo]naphthalene sulphonate(CAS No.3567-69-9)has a strong sorption to soil and sediment and therefore has negligibleto slowmigration potential to ground water.
The Henry's law Constant
The Henry's law Constant of test chemicalDisodium 4-hydroxy-3-[(4-sulphonatonaphthyl)azo]naphthalene sulphonate/Carmoisine(CAS No. 3567-69-9) was estimated by using various prediction databases.
The Henry's law Constant for the test material Carmoisine is estimated to be 3.25E-019 Pa m3/mol at 25 deg C by the EPI Suite estimation program and 3.182E-024 atm m³/mol as predicted by the Danish QSAR Prediction database.
Additional information
Adsorption\ Desorption
Various experimental data for the target compound were reviewed for the Adsorption end point which are summarized as below:
The adsorption coefficient Koc in soil and in sewage sludgeDisodium 4-hydroxy-3-[(4-sulphonatonaphthyl)azo]naphthalene sulphonate(CAS No.3567-69-9)was determined by the Reverse Phase High Performance Liquid Chromatographic method according to OECD Guideline No. 121 for testing of Chemicals. The reference substances were chosen according to structural similarity with the test substance and calibration graph was prepared. The reference substances were Phenol, Toluene, Xylene, Ethylbenzene, Naphthalene, Phenenthrene having Kocvalue ranging from 1.32 to 4.09 TheLog Kocvalue was determined to be3.313 ± 0.007at 25°C.Thus based on the result it is concluded that the test substance has a strong sorption to soil and sediment and therefore has negligibleto slowmigration potential to ground water.
The adsorption coefficient of chemical acid red 14 was studied by using Freundlich adsorption isotherm. The aim of the investigation is to determine the adsorption behavior of azo dyes in aqueous solution on DG06, GSE17200, and GSE17201 soils using C. I. Acid Red 14. GSE17200 and GSE17201 soils were obtained from Bayer Landwirtschaftszentrum, Monheim, Germany. DG06 soil was sampled in the surface layers (0– 20 cm) located in Dalian, Liaoning Province, China. Three kinds of soils were air-dried, sieved to 2 mm and stored in dark at a room temperature (20 ±1°C). The effect of initial dye concentration on the dye adsorption capacity was investigated between 100 and 800 mg/L at 20 ± 0.5°C. The dye uptake efficiencies of AR14 on DG06, GSE17200, and GSE17201 soils are high, and they are 21.9%, 10.4%, and 8.0%, respectively. By using Freundlich adsorption isotherm, Kf(Freundlich Constants)values were found to be 7.1*10-3 L/mg, 4.8*10-3L/mg, and 3.2*10-3L/mg forDG06, GSE17200, and GSE17201 soils respectively indicating high adsorption capacity of chemical Acid red 14.
On the basis of above results for target chemical, it can be concluded that the test substanceDisodium 4-hydroxy-3-[(4-sulphonatonaphthyl)azo]naphthalene sulphonate(CAS No.3567-69-9)has a strong sorption to soil and sediment and therefore has negligibleto slowmigration potential to ground water.
The Henry's law Constant
The Henry's law Constant of test chemicalDisodium 4-hydroxy-3-[(4-sulphonatonaphthyl)azo]naphthalene sulphonate/Carmoisine(CAS No. 3567-69-9) was estimated by using various prediction databases.
The Henry's law Constant for the test material Carmoisine is estimated to be 3.25E-019 Pa m3/mol at 25 deg C by the EPI Suite estimation program and 3.182E-024 atm m³/mol as predicted by the Danish QSAR Prediction database.
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