Registration Dossier
Registration Dossier
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EC number: 219-348-1 | CAS number: 2421-28-5
Epidemiological data
Administrative data
- Endpoint:
- epidemiological data
- Type of information:
- other: TLV
- Adequacy of study:
- key study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: TLV reported by a reputable source, but no finalization or publication of TLV was found
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 975
- Report date:
- 1975
Materials and methods
- Study type:
- other: TLV
- Endpoint addressed:
- acute toxicity: inhalation
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- No information on data sources
- GLP compliance:
- no
Test material
- Reference substance name:
- Benzophenone-3,3':4,4'-tetracarboxylic dianhydride
- EC Number:
- 219-348-1
- EC Name:
- Benzophenone-3,3':4,4'-tetracarboxylic dianhydride
- Cas Number:
- 2421-28-5
- Molecular formula:
- C17H6O7
- IUPAC Name:
- 5-(1,3-dioxo-1,3-dihydro-2-benzofuran-5-carbonyl)-1,3-dihydro-2-benzofuran-1,3-dione
- Test material form:
- not specified
- Details on test material:
- no data
Constituent 1
Method
- Type of population:
- occupational
- Ethical approval:
- not applicable
- Details on study design:
- no information
Results and discussion
- Results:
- The threshold limit value (TLV) for BTDA is 1 mg/m3 as proposed by the American Conference of Governmental Industrial Hygienists (ACGIH) in its notice of intended changes of threshold limit values (TLV) in 1975. There is no verification that this TLV was adopted. This is cited in the above-referenced NIOSH Health Hazard Evaluation/Toxicity Determination.
Applicant's summary and conclusion
- Conclusions:
- It is reported that the ACGIH in 1975 proposed a threshold limit value (TLV) for BTDA of 1 mg/m3. There is no evidence that this value was ever finalized or adopted.
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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