Registration Dossier
Registration Dossier
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EC number: 201-200-2 | CAS number: 79-37-8
Flammability
Administrative data
- Endpoint:
- substances / mixtures which in contact with water emit flammable gases
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: 1) No GLP
Data source
Referenceopen allclose all
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.12 (Flammability (Contact with Water))
- Deviations:
- yes
- GLP compliance:
- no
Test material
- Reference substance name:
- Oxalyl dichloride
- EC Number:
- 201-200-2
- EC Name:
- Oxalyl dichloride
- Cas Number:
- 79-37-8
- Molecular formula:
- C2Cl2O2
- IUPAC Name:
- ethanedioyl dichloride
- Test material form:
- other: liquid
Constituent 1
- Specific details on test material used for the study:
- Oxalylchloride purity >= 99.7%
Results and discussion
Substances / mixtures which in contact with water emit flammable gases
- Remarks on result:
- reaction with water (not further specified)
- Remarks:
- corresponding to 'yes' in migrated source record.
Any other information on results incl. tables
Rate of evolution of gas:
Test 1: 295 l/kg.min
Test 2: 305 l/kg.min
Test 3: 356 l/kg.min
The whole gas volume (62 ml - 67 ml) was generated during the first minute of each test respectively.
Based on the formula of oxalylchloride and water the compsition of the generated gas is
C2Cl2O2 + H2O -> CO + CO2 + 2 HCl
The likelihood of being flammable is very high. Based on the test results oxalyl dichloride fulfills the criteria of classification of dangerous goods of class 4.3 package group I.
Applicant's summary and conclusion
- Conclusions:
- The substance is considered to be hazardous because there is evolution of flammable gas at a rate greater than 1L/kg of the substance per hour. (EC A.12) The substance is therefore classified in category 1- H260.
- Executive summary:
The test was performed to determine whether the reaction of the substance with water leads to the development of dangerous amounts of gases which may be highly flammable. The test was performed according to Un N.5 that is equivalent to EC A.12. The main test leads to a maximal rate of gas evolution of 356 L/kg.min. All the gas was produced within the first minute. The generated gas (CO + CO2 + 2HCl) is considered to be flammable in a mixture with air.
Based on the gas evolution of 356 L/kg.min the substance oxalyl dichloride has to be classified in category 1 - H260: In contact with water releases flammable gases which may ignite spontaneously.
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