Bis[bis(3,5,5-trimethylhexyl)dithiocarbamate-S,S']zinc

Short-term toxicity to fish

Link to relevant study record(s)

Reference

Endpoint:

short-term toxicity to fish

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Aug -Sep 1983

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 203 (Fish, Acute Toxicity Test)

Deviations:

no

GLP compliance:

yes

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Robinsons ref 2152
- Expiration date of the lot/batch: not stated in study
- Purity test date: 98% purity - date of receipt May 1983

Storage : in original container at room temperature

Details on test solutions:

Ultrasonic dispersion and progressive dilution over a 20 min period using 0.1g Tween 80/g as a wetting agent ( no other solvent was used since precipitation and flocculation occurred immediately on mising with water)

Test organisms (species):

Salmo sp.

Details on test organisms:

TEST ORGANISM
- Common name: Rainbow trout
- Strain:Salmo gairdneri
- Source: Parkwood trout farm, kent
- Age at study initiation (mean and range, SD):
- Length at study initiation (length definition, mean, range and SD): 5.2cm
- Weight at study initiation (mean and range, SD): mean weight 3.1g
- Method of breeding:
- Maintenance of the brood fish:

ACCLIMATION
- Acclimation period: 16- 30 aug 1983
- Acclimation conditions (same as test or not):
- Type and amount of food during acclimation:
- Feeding frequency during acclimation: Omega trout pellets daily. Discontinued 24 hours prior to test
- Health during acclimation (any mortality observed):

Test type:

static

Water media type:

other: dechlorinated lab tap water

Limit test:

yes

Total exposure duration:

96 h

Hardness:

total harness 292 mg/l

Test temperature:

14 +/- 1

pH:

7.6

Dissolved oxygen:

aeration via narrow bore glass tubes

Nominal and measured concentrations:

nominal 10mg/l

Key result

Duration:

96 h

Dose descriptor:

EC50

Effect conc.:

>= 10 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat. (dissolved fraction)

Basis for effect:

mortality (fish)

Details on results:

5% mortality after 96hrs exposure using 20 fish.

Sublethal observations / clinical signs:

	cumulative mortality, 3h, 6h, 24h, 48h, 72h, 96h
control (10 fish	0	0	0	0	0	0
group 1 (10 fish)	0	0	0	0	1	1
group 2 (10 fish)	0	0	0	0	0	0

Validity criteria fulfilled:

yes

Conclusions:

No actute aquatic toxicity observed.

EC50> 10mg/l (nominal )

Description of key information

oecd 203 acute fish study

Key value for chemical safety assessment

Fresh water fish

Fresh water fish

Effect concentration:

10 mg/L

Additional information

No toxicity observed at nominal concentration 10mg/l

Lc 50 > 10mg/l (nominal)