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EC number: 204-494-0 | CAS number: 121-71-1
Endpoint summary
Administrative data
Description of key information
Appearance/physical state/colour:
In a test conducted by SSS(Europe)AB,on the basis of physical observation,the chemical 3-Hydroxyacetophenone was Beige to light brown crystalline powder in appearance .
Other supporting studies from reliable sources such as authoritative database and handbook also suggests that the chemical 3'-hydroxyacetophenone was organic White to tan coloured crystalline powder in appearance.
Melting point/freezing point:
In an experiment conducted by SSS(Europe)AB ,the melting point determination of 3-Hydroxyacetophenone (CAS No. 121-71-1) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and mean melting temperature range was determined to be 87.6 °C - 90.6°C at 977.2hPa
Other supporting studies from authoritative database also suggests that the melting point of chemical3'-Hydroxyacetophenone was determined to be in he range of 94.83 degree C to 96 degree C.As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of melting point temperature as 87.6 degree C to 90.6 degree C thus considered as key study for the chemical safety assessment
Boiling point:
In an experiment conducted by SSS(Europe)AB,the boiling point determination of 3-Hydroxyacetophenone (CAS No. 121-71-1) was done following OECD Guideline 103 and according to the method of Siwoloboff. The test was conducted and boiling point was determined to be greater than 250°C at 977.4 hPa.
Other supporting studies from various authoritative databases and handbooks suggests that the boiling point of chemical 3'-hydroxyacetophenone was determined to be in the range of 246.89 degree C to 297 degree C.
As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of boiling point temperature as greater than 250 degree C thus considered as key study for the chemical safety assessment.
Density:
The density of test item 3-Hydroxyacetophenone (CAS No. 121-71-1)was determined following OECD Guideline 109 and according to the method Adapted from ASTM D854-02 using glass pyknometer.The mean density of 3-Hydroxyacetophenone (CAS No. 121-71-1) was determined to be 1.220 g/cm³ at 20°C and 975.6 hPa.
Other supporting study from reliable sources also suggests that the density of the substance 3'-hydroxyacetophenone was determined to be determined to be in the range of 1.0092 g/cm3 to 1.1 g/cm3 at 25°C.
As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of density as 1.220 g/cm3 thus considered as key study for the chemical safety assessment.
Particle Size distribution:
The particle size distribution of test test item 3-Hydroxyacetophenone (CAS No. 121-71-1 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 25 micron.
Vapour pressure:
Data from various authoritative, modelling databases and handbooks suggests that the vapor pressure of 3'-hydroxyacetophenone at 25 deg C lies in the range of 0.0225 -0.997 Pa.
The vapor pressure value at 25 deg C for chemical safety assessment of 3'-hydroxyacetophenone was 0.0225 Pa falls in the above range.
Partition coefficient:
Partition coefficient of test chemical was studied and mention below:
The partition Coefficient n-octanol/water of test chemical was determined by the Reverse Phase High Performance Liquid Chromatographic method according to OECD Guideline No. 117 for testing of Chemicals. The reference substances were chosen according to estimated Pow range of the test substance and generalized calibration graph was prepared.
The reference substances were having Pow value ranging from 0.3 to 6.5. The Log Pow value was determined to be 1.144 ± 0.000 dimensionless at 25°C.
This value indicates that the substance is hydrophilic in nature.
Similarly in the second study from authoritative database and handbooks, suggests that the experimental Log Pow of 3’-hydroacetphenone was 1.39.This value indicates that it is hydrophillic in nature, which is also supported by its high solubility in water.
Water solubility:
The water solubility determination of test item 1-(3-hydroxyphenyl)ethanone was done as per the OECD guideline 105 by spectrophotometric analytical method as per OECD 101. The solubility of 1-(3-hydroxyphenyl)ethanone in water was determine to be 3981.8 mg/L at 30°C. Thus the 1-(3-hydroxyphenyl)ethanone is considered to be soluble in water.
The experimental water solubility of 3’-hydroxyacetophenone was 21500 mg/l at 25 deg C. This value signifies that 3’-hydroxyacetophenone is highly soluble in water.
Thus based on the both studies, it was concluded that the chemical was highly soluble in water.
Surface tension:
From the available data of chemspider the surface tension of 3'-Hydroxyacetophenone (121-71-1) was determined to be 44.0±3.0 dyne/cm.
Flash point:
Various laboratory reports and databases were reviewed to summarize thefollowing information:
The flash point determination of 3-Hydroxyacetophenone (CAS No. 121-71-1) was done by laboratory following closed cup method using Pensky-Martens flash point apparatus. The test was conducted in replicates and mean flash point was found to be 119.6°C at 977.6hPa.
From the available data of Haz-map and chemspider database the flash point for 3'-Hydroxyacetophenone (121-71-1) was determined to be >93.333 degree C and 115.8 degree C.
Based on criteria mentioned in CLP regulation the chemical has flash point >than 60 degree C hence the 3-Hydroxyacetophenone (121 -71 -1) was considered to be non-flammable.
As per the available data for flash point from laboratory report and authoritative databases, the flash point value determined was in range from 93.33 degree C to 119.6 degree C. As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of flash point as 119.6 °C at 977.6 hPa within the range thus considered as key study for the chemical safety assessment. Also based on criteria mentioned in CLP regulation the chemical has flash point >than 60 degree C hence the 3-Hydroxyacetophenone (121 -71 -1) was considered to be non-flammable.
Auto flammability:
In accordance with column 2 of Annex VII of the REACH regulation, the auto flammability study does not need to be conducted for solids which melts below 160 °C.
The substance 3'-Hydroxyacetophenone (CAS No. 121-71-1) is a solid at room temperature and it is reported to melt at a temperature range of 87.6 °C - 90.6°C . Hence, it is not feasible to determine self ignition temperature and the endpoint was considered for waiver.
Flammability:
The chemical 3'-hydroxyacetophenone has a high flash point of 119.6 deg C, which represents less likelIhood of the chemical being flammable. Also 3'-hydroxyacetophenone has a NFPA rating of 0.Thus, this end point was considered for waiver since the chemical is not likely to be flammable under normal conditions of storage and use considering the high flash point.
Explosivenss:
In accordance with column 2 of Annex VII of the REACH regulation, the study does not need to be conducted since there are no chemical groups associated with explosive properties present in the molecule of 3'-Hydroxyacetophenone (CAS No. 121-71-1).Thus, this end point was considered for waiver and the chemical is considered to be "Non explosive".
Oxidising properties:
In accordance with column 2 of Annex VII of the REACH regulation, the substance 3'-Hydroxyacetophenone (CAS No. 121-71-1) is incapable of reacting exothermically with combustible materials, on the basis of the chemical structure. It is an organic substance containing oxygen but no halogen atoms. However, these elements are not chemically bonded to nitrogen or oxygen. Thus, the chemical is unlikely to exhibit oxidising properties and this study was therefore considered for waiver
pH:
The pH determination of test item 3-Hydroxyacetophenone (CAS No 121-71-1) was done following OECD guideline 122. pH of 1% w/v dispersion was measured with the help of pH meter and it was observed to be 6.16at 28 °C. The pH suggested that 3-Hydroxyacetophenone (121 -17 -1) was acidic in nature.
Viscosity:
In accordance with Section 2 of REACH Annex XI, information requirement section 7.17, this study cannot be conducted on solid materials or gases. According to ECHA Chapter 7 guidance, viscosity measurement is only relevant to liquids. 3'-Hydroxyacetophenone (CAS No. 121-71-1) is a white to tan colored crystalline powder.Hence this study can be considered for waiver.
Additional information
Appearance/physical state/colour:
In a test conducted by SSS(Europe)AB,on the basis of physical observation,the chemical 3-Hydroxyacetophenone was Beige to light brown crystalline powder in appearance .
Other supporting studies from reliable sources such as authoritative database and handbook also suggests that the chemical 3'-hydroxyacetophenone was organic White to tan coloured crystalline powder in appearance.
Melting point/freezing point:
In an experiment conducted by SSS(Europe)AB ,the melting point determination of 3-Hydroxyacetophenone (CAS No. 121-71-1) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and mean melting temperature range was determined to be 87.6 °C - 90.6°C at 977.2hPa
Other supporting studies from authoritative database also suggests that the melting point of chemical3'-Hydroxyacetophenone was determined to be in he range of 94.83 degree C to 96 degree C.As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of melting point temperature as 87.6 degree C to 90.6 degree C thus considered as key study for the chemical safety assessment
Boiling point:
In an experiment conducted by SSS(Europe)AB,the boiling point determination of 3-Hydroxyacetophenone (CAS No. 121-71-1) was done following OECD Guideline 103 and according to the method of Siwoloboff. The test was conducted and boiling point was determined to be greater than 250°C at 977.4 hPa.
Other supporting studies from various authoritative databases and handbooks suggests that the boiling point of chemical 3'-hydroxyacetophenone was determined to be in the range of 246.89 degree C to 297 degree C.
As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of boiling point temperature as greater than 250 degree C thus considered as key study for the chemical safety assessment.
Density:
The density of test item 3-Hydroxyacetophenone (CAS No. 121-71-1)was determined following OECD Guideline 109 and according to the method Adapted from ASTM D854-02 using glass pyknometer.The mean density of 3-Hydroxyacetophenone (CAS No. 121-71-1) was determined to be 1.220 g/cm³ at 20°C and 975.6 hPa.
Other supporting study from reliable sources also suggests that the density of the substance 3'-hydroxyacetophenone was determined to be determined to be in the range of 1.0092 g/cm3 to 1.1 g/cm3 at 25°C.
As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of density as 1.220 g/cm3 thus considered as key study for the chemical safety assessment.
Particle Size distribution:
The particle size distribution of test test item 3-Hydroxyacetophenone (CAS No. 121-71-1 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was determined to be in the range of 150 micron to 25 micron.
Vapour pressure:
Data from various authoritative, modelling databases and handbooks suggests that the vapor pressure of 3'-hydroxyacetophenone at 25 deg C lies in the range of 0.0225 -0.997 Pa.
The vapor pressure value at 25 deg C for chemical safety assessment of 3'-hydroxyacetophenone was 0.0225 Pa falls in the above range.
Partition coefficient:
Partition coefficient of test chemical was studied and mention below:
The partition Coefficient n-octanol/water of test chemical was determined by the Reverse Phase High Performance Liquid Chromatographic method according to OECD Guideline No. 117 for testing of Chemicals. The reference substances were chosen according to estimated Pow range of the test substance and generalized calibration graph was prepared.
The reference substances were having Pow value ranging from 0.3 to 6.5. The Log Pow value was determined to be 1.144 ± 0.000 dimensionless at 25°C.
This value indicates that the substance is hydrophilic in nature.
Similarly in the second study from authoritative database and handbooks, suggests that the experimental Log Pow of 3’-hydroacetphenone was 1.39.This value indicates that it is hydrophillic in nature, which is also supported by its high solubility in water.
Water solubility:
The water solubility determination of test item 1-(3-hydroxyphenyl)ethanone was done as per the OECD guideline 105 by spectrophotometric analytical method as per OECD 101. The solubility of 1-(3-hydroxyphenyl)ethanone in water was determine to be 3981.8 mg/L at 30°C. Thus the 1-(3-hydroxyphenyl)ethanone is considered to be soluble in water.
The experimental water solubility of 3’-hydroxyacetophenone was 21500 mg/l at 25 deg C. This value signifies that 3’-hydroxyacetophenone is highly soluble in water.
Thus based on the both studies, it was concluded that the chemical was highly soluble in water.
Surface tension:
From the available data of chemspider the surface tension of 3'-Hydroxyacetophenone (121-71-1) was determined to be 44.0±3.0 dyne/cm.
Flash point:
Various laboratory reports and databases were reviewed to summarize thefollowing information:
The flash point determination of 3-Hydroxyacetophenone (CAS No. 121-71-1) was done by laboratory following closed cup method using Pensky-Martens flash point apparatus. The test was conducted in replicates and mean flash point was found to be 119.6°C at 977.6hPa.
From the available data of Haz-map and chemspider database the flash point for 3'-Hydroxyacetophenone (121-71-1) was determined to be >93.333 degree C and 115.8 degree C.
Based on criteria mentioned in CLP regulation the chemical has flash point >than 60 degree C hence the 3-Hydroxyacetophenone (121 -71 -1) was considered to be non-flammable.
As per the available data for flash point from laboratory report and authoritative databases, the flash point value determined was in range from 93.33 degree C to 119.6 degree C. As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of flash point as 119.6 °C at 977.6 hPa within the range thus considered as key study for the chemical safety assessment. Also based on criteria mentioned in CLP regulation the chemical has flash point >than 60 degree C hence the 3-Hydroxyacetophenone (121 -71 -1) was considered to be non-flammable.
Auto flammability:
In accordance with column 2 of Annex VII of the REACH regulation, the auto flammability study does not need to be conducted for solids which melts below 160 °C.
The substance 3'-Hydroxyacetophenone (CAS No. 121-71-1) is a solid at room temperature and it is reported to melt at a temperature range of 87.6 °C - 90.6°C . Hence, it is not feasible to determine self ignition temperature and the endpoint was considered for waiver.
Flammability:
The chemical 3'-hydroxyacetophenone has a high flash point of 119.6 deg C, which represents less likelIhood of the chemical being flammable. Also 3'-hydroxyacetophenone has a NFPA rating of 0.Thus, this end point was considered for waiver since the chemical is not likely to be flammable under normal conditions of storage and use considering the high flash point.
Explosivenss:
In accordance with column 2 of Annex VII of the REACH regulation, the study does not need to be conducted since there are no chemical groups associated with explosive properties present in the molecule of 3'-Hydroxyacetophenone (CAS No. 121-71-1).Thus, this end point was considered for waiver and the chemical is considered to be "Non explosive".
Oxidising properties:
In accordance with column 2 of Annex VII of the REACH regulation, the substance 3'-Hydroxyacetophenone (CAS No. 121-71-1) is incapable of reacting exothermically with combustible materials, on the basis of the chemical structure. It is an organic substance containing oxygen but no halogen atoms. However, these elements are not chemically bonded to nitrogen or oxygen. Thus, the chemical is unlikely to exhibit oxidising properties and this study was therefore considered for waiver
pH:
The pH determination of test item 3-Hydroxyacetophenone (CAS No 121-71-1) was done following OECD guideline 122. pH of 1% w/v dispersion was measured with the help of pH meter and it was observed to be 6.16at 28 °C. The pH suggested that 3-Hydroxyacetophenone (121 -17 -1) was acidic in nature.
Viscosity:
In accordance with Section 2 of REACH Annex XI, information requirement section 7.17, this study cannot be conducted on solid materials or gases. According to ECHA Chapter 7 guidance, viscosity measurement is only relevant to liquids. 3'-Hydroxyacetophenone (CAS No. 121-71-1) is a white to tan colored crystalline powder.Hence this study can be considered for waiver.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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