7941

• UCREFRP Catalog Number: 7941
• Author: Johnson, W. W. and M. T. Finley
• Title: Editor
• USFW Year: Series
• USFW - Doc Type: 1980
• Copyright Material: NO

20
96-h LC50 NOTE: The toxicity of dimethyl chlorendate to

Test
Stage
or
Temp
95% 5% C CI rainbow trout was not altered by temperature var-
organism wt
(g)
(C) iations between 6° and 16°C. Time-independent
'
-- s for the four species ranged from 0.2 to 1.3 mg/L
LC50
Channel catfish' 1.8 17 45.8 and cumulative toxicity indices were from 1.8 to 2.6,
indicating a low degree of accumulative action. Flow-
Bluegill' 1.3 17 29.3 through tests produced a sharp increase in toxicity for
dbutyl chlorendate, yielding a 30-day LC50 of 6 µg/L
Rainbow trout, 1.5 12 24.9 for rainbow trout. Although mortality did not reach
16.1-38.5 time-independence during this period, a high degree of
accumulative action is indicated.
Bluegill, 1.5 17 23.4
CHLOROWAX
Rainbow trout' 1.5 12 20.0
Chemical Name: Chlorinated ii-paraffin of C10-C30
Bluegill' 1.5 17 19.1
e chlorine content of 35-65%
in len
th and avera
h
g
c
a
g
eTechnical material contains 95% chlordane isomers and 5%
related compounds. Alternate Names: Chlorinated paraffin
CHLORENDATE
Chemical Name: Dibutyl and dimethyl esters of
1, 4, 5, 6, 7, 7-hexac hloro-(2.2.1)-bicyclo-5-hep tene-2, 3-
dicarboxylic acid
Alternate Names: Not known
Principal Use: Industrial chemical: plasticizer, oil addi-
tive, flame retardant
Sample Description: Commercial formulations, 100%;
Chlorowax 401, Chlorowax 501, Chlorowax 701,
Chlorowax 50004, Chlorowax LV6
SUMMARY OF ACUTE TOXICITY
96-h LC50
Principal Use: Industrial chemical: plasticizer Test Wt Temp 95% CI
organism (g) (C) (mg/L)
Sample Description: Commercial formulation, 100%:

Dibutyl chlorendate', Dimethyl chlorendate, Rainbow trout' 0.7 10 > 300
Bluegill' 0.5 20 > 300
SUMMARY OF ACUTE TOXICITY
96-h LC50 Rainbow trout, 0.7 10 > 300
Test Wt Temp 95% CI Bluegill, 0.5 20 > 300
organism (g) (C) (mg/L)
Rainbow trout' 1.0 6 170 Rainbow trout' 0.7 10 > 300
132-210
Bluegill' 0.5 20 > 300
Fathead minnows' 0.7 20 > 100
Rainbow trout' 0.5 10 > 300
Channel catfish' 1.0 20 > 100
Fathead minnow' 0.8 20 > 100
Bluegill' 1.4 20 > 100
Channel catfish' 1.1 20 > 300
Rainbow trout, 1.0 11 1.4
1.0.1.9 Bluegill' 0.7 20 > 300
Fathead minnow, 1.0 20 1.7 Rainbow trout' 0.7 10 > 300
1.3-2.3
Bluegill' 0.5 20 > 300
Channel catfish, 1.0 20 2.0
1.6-2.5 NOTE: Variations in test temperature between 5° and
25°C did not reduce the static toxicity of Chlorowax
2.2 5000 below a 96-h LC50 value of 300 mg/L. Sublethal
Bluegill, 1.4 20 1.8-2.7 effects were noted in flow-through tests with rainbow