Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Appearance:

Based on available data from reliable handbook, the chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was observed to be an organic colourless liquid having mild,green,citrus odour.

Freezing point

Based on the prediction done using the EPI Suite MPVPBP V1.43,the freezing point of chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was predicted.

Boiling point:

Based on available data from reliable sources such as review article and handbook, the boiling point of  chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was determined to be 230 degree.

Density:

Based on available data from reliable sources such as authoritative database and handbook,the density of chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was determined to be 0.8730 g/cm3 at 20 degree C.

Particle Size Distribution:

The study does not need to be conducted because the test chemical is marketed or used in a non- solid or granular form.

1,1-diethoxy-3,7-dimethylocta-2,6-diene was observed to be an organic colourless liquid having mild,green,citrus odour.

Hence, this endpoint was considered for waiver.

Vapor Pressure:

Data from handbooks and authoritative databases suggests that the estimated vapor pressure of citral diethyl acetal at 25 deg C was 2.13 Pa.

Partition Coefficient:

Data from various authoritative databases suggests that the estimated octanol water partition coefficient (log Pow) of Citral diethyl acetal was 4.82.This value indicates that citral diethyl acetal is hydrophobic in nature.

Water Solubility:

Data from authoritative databases suggests that the experimental solubility ofcitral diethyl acetal in water at 22.2 deg C was less than 1000 mg/l.

Flash point:

Based on the scifinder database, the flash point of 1,1-diethoxy-3,7-dimethylocta-2,6-diene (7492 -66 -2) was determined to be 91.3±23.1 °C.Based on criteria mentioned in CLP regulation the chemical has flash point >than 60 degree C hence the substance was considered to be non-flammable.

Surface tension:

Based on the data from ACD labs, surface tension for 1,1-diethoxy-3,7-dimethylocta-2,6-diene was predicted to be 27.1 ± 3.0 dyne/cm.

Autoflammability:

1,1-diethoxy-3,7-dimethylocta-2,6-diene did not catch fire on being exposed to air at room temperature of 27°Cpressure of 966 hPa. This indicates that 1,1-diethoxy-3,7-dimethylocta-2,6-diene is not auto-flammable.

Flammability:

1,1-diethoxy-3,7-dimethylocta-2,6-diene does not indicate any ignition when the flame of bunsen burner having temperature of approximately 950°C is brought in contact with it. Thus it can be concluded that 1,1-diethoxy-3,7-dimethylocta-2,6-diene is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus 1,1-diethoxy-3,7-dimethylocta-2,6-diene was considered non-flammable for chemical safety assessment.

Explosiveness:

The study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties.

Oxidising properties:

The study does not need to be conducted because the organic substance contains oxygen or halogen atoms which are chemically bonded only to carbon or hydrogen and hence, the classification procedure does not need to be applied

Additional information

Appearance:

Based on available data from reliable handbook, the chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was observed to be an organic colourless liquid having mild,green,citrus odour.

Other supporting studies from various souces such ashandbook,authoritative database and review articles also indicates that the chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was observed to be an organic colourless liquid in appearance having  a flowery, warm-woody citrus odor.

Freezing point

Based on the prediction done using the EPI Suite MPVPBP V1.43,the freezing point of chemical 1,1-diethoxy-3,7-dimethylocta-2,6-dienewas predicted.

The freezing point of chemical 1,1-diethoxy-3,7-dimethylocta-2,6-dienewas estimated to be 4.78˚C

Other supporting study from review article also indicates that the freezing point of chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was estimated to be 5 degree C,which is very close to selected key study value.

Boiling point:

Based on available data from reliable sources such as review article and handbook, the boiling point of  chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was determined to be 230 degree.

Other supporting studies based on various sources such as authoritative database and handbook also indicates that the boiling point of chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was determined to be in the range of 117 -142 degree C at 10 mm hg and 15 mm Hg respectively also supported by the data from review article which estimates the boiling point value as 269.7degree C.

Density:

Based on available data from reliable sources such as authoritative database and handbook,the density of chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene was determined to be 0.8730 g/cm3 at 20 degree C.

Other supporting studies based on various reliable sources such as authoritative database and handbook also indicates that the density of chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene

was determined to be in the range of 0.866 g/cm3 to 0.879 g/cm3 and the selected key study value lies in the range as mentioned.

Particle Size Distribution:

The study does not need to be conducted because the test chemical is marketed or used in a non- solid or granular form.

1,1-diethoxy-3,7-dimethylocta-2,6-diene was observed to be an organic colourless liquid having mild,green,citrus odour.

Hence, this endpoint was considered for waiver.

Vapor Pressure:

Data from handbooks and authoritative databases suggests that the estimated vapor pressure of citral diethyl acetal at 25 deg C was 2.13 Pa.

Partition Coefficient:

Data from various authoritative databases suggests that the estimated octanol water partition coefficient (log Pow) of Citral diethyl acetal was 4.82.This value indicates that citral diethyl acetal is hydrophobic in nature.

Water Solubility:

Data from authoritative databases suggests that the experimental solubility ofcitral diethyl acetal in water at 22.2 deg C was less than 1000 mg/l.

Flash point:

Based on the scifinder database, the flash point of 1,1-diethoxy-3,7-dimethylocta-2,6-diene (7492 -66 -2) was determined to be 91.3±23.1 °C.Based on criteria mentioned in CLP regulation the chemical has flash point >than 60 degree C hence the substance was considered to be non-flammable.

Surface tension:

Based on the data from ACD labs, surface tension for 1,1-diethoxy-3,7-dimethylocta-2,6-diene was predicted to be 27.1 ± 3.0 dyne/cm.

Autoflammability:

1,1-diethoxy-3,7-dimethylocta-2,6-diene did not catch fire on being exposed to air at room temperature of 27°Cpressure of 966 hPa. This indicates that 1,1-diethoxy-3,7-dimethylocta-2,6-diene is not auto-flammable.

Flammability:

1,1-diethoxy-3,7-dimethylocta-2,6-diene does not indicate any ignition when the flame of bunsen burner having temperature of approximately 950°C is brought in contact with it. Thus it can be concluded that 1,1-diethoxy-3,7-dimethylocta-2,6-diene is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus 1,1-diethoxy-3,7-dimethylocta-2,6-diene was considered non-flammable for chemical safety assessment.

Explosiveness:

The study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties.

Oxidising properties:

The study does not need to be conducted because the organic substance contains oxygen or halogen atoms which are chemically bonded only to carbon or hydrogen and hence, the classification procedure does not need to be applied