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EC number: 218-880-1 | CAS number: 2273-43-0
Endpoint summary
Administrative data
Description of key information
Appearance / physical state / colour:
The appearance of Butylstannonic acid was observed to be a white powder organic compound .
Melting point/ Freezing point:
The Mean decomposition temperature of Butylhydroxyoxostannane (CAS No. 2273-43-0) was determined be 315 °C at 978.8 hPa.
Boiling point:
The mean decomposition temperature of Butylhydroxyoxostannane (CAS No. 2273-43-0) was determined to be 315.3 °C at 976.5 hPa.
Density:
The mean density of Butylhydroxyoxostannane (CAS No. 2273-43-0) was determined to be 0.8178 g/cm³ at 20°C and 979.2 hPa.
Particle size distribution (Granulometry):
The particle size distribution of test item Butylhydroxyoxostannane (CAS No. 2273-43-0 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was found to be in the range of 150 micron to less than 10 micron.
Vapour pressure:
The estimated vapour pressure of the test substance Butylstannonic acid at 25 deg C was 24.4 Pa.
Partition coefficient:
Octanol water partition coefficient of target chemical Butylstannonic acid (CAS no. 2273 -43 -0) was estimated by using EPI suite KOWWIN Program (v1.68). The estimated log POW of the chemical Butylstannonic acid was 0.1996 . On the basis of estimated value log Kow value, this test chemical can be considered as hydrophilic in nature.
Water solubility:
The water solubility of Butylstannonic acid was determined to be 3.2 mg/L at 20 °C.
Surface tension:
In accordance with column 2 of Annex VII of the REACH regulation, the study need only be conducted if surface activity is a desired property of the chemical. The chemical Butylstannonic acid is used as a catalyst. For this use, surface activity is not an important property. Hence this study was considered for waiver.
Flash point:
The mean flash point of Butylhydroxyoxostannane (CAS No. 2273-43-0) was determined to be 237.6°C at 977.6 hPa.
Autoflammability:
Butylstannonic acid did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Butylstannonic acid is not auto-flammable.
Flammability:
Butylstannonic acid 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 Butylstannonic acid is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus Butylstannonic acid 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 there are no chemical groups present in the molecule which are associated with oxidizing properties and hence the classification procedure does not need to be applied.
pH:
The pH of 1% w/v dispersion of the test item Butylhydroxyoxostannane (CAS No2273-43-0) was 6.40 at 27°C.
Additional information
Appearance / physical state / colour:
Based on available data from obtained report, the appearance of Butylstannonic acid was observed to be a white powder organic compound .
From other reliable sources & authoritative databases it is concluded that Butylstannonic acid appear as a white solid.
Melting point/ Freezing point:
The melting point determination of Butylhydroxyoxostannane (CAS No. 2273-43-0) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean decomposition temperature was determined to be 315 °C at 978.8 hPa.
Boiling point:
The boiling point determination of Butylhydroxyoxostannane (CAS No. 2273-43-0) was done following OECD Guideline 103 and according to the method of Siwoloboff. The test was conducted in replicates and mean decomposition temperature was found to be 315.3°C at
976.5 hPa.
Density:
The density of test item Butylhydroxyoxostannane (CAS No. 2273-43-0) was determined following OECD Guideline 109 and according to the pyknometer using Adapted from ASTM D854-02. The mean density of test item was determined to be 0.8178 g/cm³ at 20°C and 979.2 hPa.
Particle size distribution (Granulometry):
The particle size distribution of test item Butylhydroxyoxostannane (CAS No. 2273-43-0 ) was determined by granulometric analysis with rotap sieve shaker. The particle size distribution was found to be in the range of 150 micron to less than 10 micron.
Vapour pressure:
Modified Grain method (Mean of Antoine and Modified Grain methods) was used to estimate the vapour pressure of the test substance Butylstannonic acid using MPBPVP v1.43 of EPI SUITE.
The estimated vapour pressure of the test substance Butylstannonic acid at 25 deg C was 24.4 Pa.
Partition coefficient:
Octanol water partition coefficient of target chemical Butylstannonic acid (CAS no. 2273 -43 -0) was estimated by using EPI suite KOWWIN Program (v1.68). The estimated log POW of the chemical Butylstannonic acid was 0.1996 . On the basis of estimated value log Kow value, this test chemical can be considered as hydrophilic in nature.
Water solubility:
Based on available data from authoritative database Gestis, the water solubility of Butylstannonic acid was determined to be 3.2 mg/L at 20 °C. Hence, on the basis of obtained value the Butylstannonic acid was considered to be slightly soluble in water.
Surface tension:
In accordance with column 2 of Annex VII of the REACH regulation, the study need only be conducted if surface activity is a desired property of the chemical. The chemical Butylstannonic acid is used as a catalyst. For this use, surface activity is not an important property. Hence this study was considered for waiver.
Flash point:
The flash point determination of Butylhydroxyoxostannane (CAS No. 2273-43-0) was done following closed cup method using Pensky-Martens flash point apparatus. The test was conducted in replicates and mean flash point was determined to be 237.6°C at 977.6 hPa.
Autoflammability:
Butylstannonic acid did not catch fire on being exposed to air at room temperature of 27°C pressure of 966 hPa. This indicates that Butylstannonic acid is not auto-flammable.
Flammability:
Butylstannonic acid 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 Butylstannonic acid is not flammable at high temperature. However since such high temperatures are not found under normal circumstances of transportation and use, thus Butylstannonic acid 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 there are no chemical groups present in the molecule which are associated with oxidizing properties and hence the classification procedure does not need to be applied.
pH:
The pH determination of test item Butylhydroxyoxostannane (CAS No 2273-43-0) was done following OECD guideline 122. pH of 1% w/v dispersion was measured with the help of pH meter. The mean pH was determined to be 6.40 at 27 °C. Hence Butylhydroxyoxostannane was considered to be acidic in nature.
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