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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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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

EC10, LC10 or NOEC for freshwater invertebrates:
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.