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Toxicity to aquatic algae and cyanobacteria

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Description of key information

Toxicity to aquatic algae and cyanobacteria data is available for 2 streams within this Categoryy.  72 h ErL50 ranged 1.3 -1.5 mg/l.  96 hr ErL50 ranged 1.4 - 1.5 mg/l. 72hr NOEC ranged 0.30-0.37 mg/l.  96 hr NOEC ranged 0.47 - 0.94 mg/l.  72Hr NOELR ranged  0.46-0.47mg/l.  96hr NOELR ranged 0.47-1.1 mg/l

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Additional information

CAS No 68477 -54 -3 Proprietary Data was available from ExxonMobil (2004) for 2 streams within the Resin Oils and Cyclic Dienes Category. This is a GLP compliant, guideline study considered adequate for assessment. The Effects on growth rate (r) based upon actual loading rates for Low Dicyclopentadiene Resin Oil (Low DCPD Resin Oil):72 and 96 hr ErL50 = 1.5 mg/L (<0.23* - >7.3* mg/L)72 hr NOELR = 0.46 mg/L 96 hr NOELR = 1.1 mg/L 72 hr NOEC 0.37 mg/l (measured concentrations) 96 hr NOEC 0.94 mg/l (meaured concentrations).

CAS No 68478 -10 -4 This is a GLP compliant guideline study considered adequate for assessment. The effects on growth rate (r) based upon actual loading rates for Dicyclopentadiene/Codimer Concentrate (DCPD/Codimer Concentrate) are: 72 hr ErL50 = 1.3 mg/L; 96 hr ErL50 = 1.4 mg/L 72 and 96 hr NOELR = 0.47 mg/L, 72 and 96 hr NOEC 0.30 mg/l..