Registration Dossier
Registration Dossier
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EC number: 406-250-0 | CAS number: 72619-32-0 HALOXYFOP R-(+)-ME HERBICIDAL CHEMICAL
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Haloxyfop (R and S) methyl ester
Lot #: FA&PC 013156 (TSN102596)
Purity: 99.1% - Key result
- Melting / freezing pt.:
- -12.4 °C
- Conclusions:
- Melting point: -12.4°C
- Executive summary:
The study was conducted following OPPTS 830.7200 and OECD guideline 102. The melting point of the test substance was determined to be -12.4°C by differential scanning calorimeter (DSC) analysis.
Reference
All samples were sealed into aluminum pans for this study. The instrument calibration was verified prior to use by scanning a 2.237 mg indium standard at 10°C/min through the melting point. The instrument performance was evaluated using a 1.683 mg sample of phenacetin scanned at 0.5°C/min. A preliminary scan, at 10°C/min, of the test substance was done using 7.610 mg. In each analysis of the test substance the DSC was loaded with the sample at ambient temperature and then brought to -50°C to ensure the sample aliquot had frozen. The melting point was determined to be in the range of about -17°C. Next, 1.361 and 0.932 mg samples of the test substance were scanned at 0.5°C/min across the melting range of the material. The reported melting point is the average of the two determinations.
Description of key information
OECD 102; OPPTS 830.7200
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -12.4 °C
Additional information
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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