Isopropylamine

Endpoint summary

Description of key information

Fish

LC50 (96 h, freshwater) = 40 mg/L; LC0 (96 h) = 25 mg/L; nominal

Aquatic invertebrates

EC50 (48 h) = 47.4 mg/L; EC0 (48 h) = 31.2 mg/L; nominal

Algae

ErC50 (72 h) = 18.9 mg/L

ErC10 (72 h) = 2.6 mg/L

NOErC (72 h) = 1.25 mg/L

Microorganisms

EC10 (respiration inhibition) = 300 mg/L

Additional information

Summary of acute aquatic toxicity data

(Note: Data relate to test solutions without additional neutralisation)

Test	Source	Species	EC/LC50 [mg/L]	EC/LCx [mg/L]	Reliability
Fish
Fish 96 h, DIN 38412, part 15 / OECD 203	Hoechst AG 1979a	Oncorhynchus mykiss	40	LD0 = 25	2
Fish 96 h, DIN 38412, part 15 / OECD 203	Hoechst AG 1979b	Lepomis gibbosus	88	LD0 = 25	2
Daphnia
Daphnia, 48 h, OECD 202 / EU C.2	BASF AG 1988	Daphnia magna	47.4	EC0 = 31.2	2
Daphnia, 48 h, ASTM 1986 / EPA 1986, 1987	Chester et a. 1994	Daphnia magna	91.6	EC10  ~50	3
Alga
Alga, 72 h, DIN 38412, part 9	BASF AG 1988	Scenedesmus subspicatus	18.9	ECr10  2.6	2
Alga, 96 h, EPA 1986	Chester et al. 1994	Scenedesmus capricornutum	<62.5	ECr90 = 62.5	3

STP microorganism toxicity data:

EC10 (STP-microorganisms) = 300 mg/L, based on the following data:

Activated sludge respiration inhibition test (OECD 209, 1984; GLP):

EC20 (OECD 209; 30 min) ca. 600 mg/L;

EC50 (OECD 209; 30 min) > 1000 mg/L (27 % inhibition observed relative to control).

With regard to long-term microorganism toxicity, these data are supported by available biodegradation screening tests, where no microorganism toxicity was observed up to 656 mg/L test item (fast

and thorough mineralisation).