Registration Dossier
Registration Dossier
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EC number: 200-756-3 | CAS number: 71-55-6
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
A single study is included in this section which achieved a rating of 1 (valid without restrictions) by De Rooij et al 2004 who compiled a risk evaluation based on the data included in the EuroChlor review (not included in this section as it already appears in the acute toxicity section). The EuroChlor review refers to another study relating to chronic invertebrate toxicity but this is not included in the dossier, being not available and showing a NOEC above the key study.
The 17 day NOEC (offspring) for 1,1,1-trichloroethane on Daphnia is 1.3 mg/L.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 1.3 mg/L
Additional information
The results of the EuroChlor review assessment De Rooij et al 2004 are shown in the table below.
Chronic studies on freshwater invertebrates
Species |
Duration |
Study type |
Endpoint |
Conc. (mg/L) |
SF 10 (ug/L) |
Validity |
Comments |
Reference |
Daphnia magna |
17 day |
SS,A,C 48h change |
NOEC LD 50 LOEC |
1.3 5.4 2.4 (offspring) |
130 |
1 |
Reproduction, mortality |
Thompson & Carmicheal 1989 |
21 day |
SS,A,C |
NOEC |
7.9 |
790 |
1 |
Growth |
Wolf et al 1986 |
Key: Analysis A = Yes, N = nominal concentration.
Study type S = static, SS = semi-static, FT = flow through. C = closed system
Rating for validity 1 = valid without restriction, 2 = valid with restrictions, 3 = invalid, 4 = not assignable (inadequate data).
No data are available for marine invertebrates. However, it is generally acknowledged by the experts in this field that as trichloroethane is a non-specific toxicant, results obtained with freshwater species will be applicable to marine species.
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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