RIFM fragrance ingredient safety assessment, citronellyl propionate, CAS registry number 141-14-0

In addition, the total systemic exposure for citronellyl propionate (0.54 μg/kg/day) is below the TTC (30 μg/kg/day; Kroes, 2007) for the repeated dose toxicity endpoint at the current level of use.

RIFM fragrance ingredient safety assessment, dihydrocarvyl acetate, CAS Registry Number 20777-49-5

The existing information supports the use of this material as described in this safety assessment. Dihydrocarvyl acetate was evaluated for genotoxicity, repeated dose toxicity, reproductive toxicity, local respiratory toxicity, phototoxicity/photoallergenicity, skin sensitization, and environmental safety. Data from read-across analogs dihydrocarveol (isomer unspecified) (CAS # 619-01-2) and acetic acid (CAS # 64-19-7) show that dihydrocarvyl acetate is not expected to be genotoxic. Data on read-across analogs isopulegol (CAS # 89-79-2) and acetic acid (CAS # 64-19-7 provide a calculated MOE >100 for the repeated dose toxicity endpoint. The reproductive and local respiratory toxicity endpoints were evaluated using the TTC for a Cramer Class I material, and the exposure to dihydrocarvyl acetate is below the TTC (0.03 mg/kg/day and 1.4 mg/day, respectively). Data from read-across analog 4-methyl-8-methylenetricyclo [3.3.1.(3,7)]decan-2-yl acetate (CAS # 122,760-85-4) provided dihydrocarvyl acetate a NESIL of 2500 μg/cm2 for the skin sensitization endpoint. The phototoxicity/photoallergenicity endpoints were evaluated based on UV/Vis spectra; dihydrocarvyl acetate is not expected to be phototoxic/photoallergenic. The environmental endpoints were evaluated; dihydrocarvyl acetate was found not to be PBT as per the IFRA Environmental Standards, and its risk quotients, based on its current volume of use in Europe and North America (i.e., PEC/PNEC), are <1.

RIFM fragrance ingredient safety assessment, 4,8-decadienal, (4Z,8Z)-, CAS Registry Number 1958027-35-4

The existing information supports the use of this material as described in this safety assessment. 4,8-Decadienal, (4Z,8Z)- was evaluated for genotoxicity, repeated dose toxicity, reproductive toxicity, local respiratory toxicity, phototoxicity/photoallergenicity, skin sensitization, and environmental safety. Data from read-across analogs 4,7-decadienal (CAS # 934534-30-2) and nona-2-trans-6-cis-dienal (CAS # 557-48-2) show that 4,8-decadienal, (4Z,8Z)- is not expected to be genotoxic. Data on analog 10-undecenal (CAS # 112-45-8) provide a calculated Margin of Exposure (MOE) > 100 for the repeated dose toxicity and fertility endpoints and a No Expected Sensitization Induction Level (NESIL) of 1700 μg/cm2 for the skin sensitization endpoint. The developmental toxicity and local respiratory toxicity endpoints were evaluated using the Threshold of Toxicological Concern (TTC) for Cramer Class I materials; exposure is below the TTC (0.03 mg/kg/day and 1.4 mg/day, respectively). The phototoxicity/photoallergenicity endpoints were evaluated based on ultraviolet/visible (UV/Vis) spectra; 4,8-decadienal, (4Z,8Z)- is not expected to be phototoxic/photoallergenic. The environmental endpoints were evaluated; 4,8-decadienal, (4Z,8Z)- was found not to be Persistent, Bioaccumulative, and Toxic (PBT) as per the International Fragrance Association (IFRA) Environmental Standards. Its risk quotients, based on its current volume of use in Europe and North America (i.e., Predicted Environmental Concentration/Predicted No Effect Concentration [PEC/PNEC]), are <1.

RIFM fragrance ingredient safety assessment, cis-3-hexenyl tiglate, CAS Registry Number 67883-79-8

The existing information supports the use of this material as described in this safety assessment. cis-3-Hexenyl tiglate was evaluated for genotoxicity, repeated dose toxicity, reproductive toxicity, local respiratory toxicity, phototoxicity/photoallergenicity, skin sensitization, and environmental safety. Data from read-across analogs 2-methyl-trans-2-butenoic acid (CAS # 80-59-1) and cis-3-hexenol (CAS # 928-96-1) show that cis-3-hexenyl tiglate is not expected to be genotoxic. The repeated dose, reproductive, and local respiratory toxicity endpoints were evaluated using the Threshold for Toxicological Concern (TTC) for a Cramer Class I material; exposure to cis-3-hexenyl tiglate is below the TTC (0.03 mg/kg/day, 0.03 mg/kg/day and 1.4 mg/day, respectively). Data from analog 2-hexenoic acid, 2-methyl-, methyl ester, (2E)- (CAS # 16493-96-2) provided cis-3-hexenyl tiglate a No Expected Sensitization Induction Level (NESIL) of 1100 μg/cm2 for the skin sensitization endpoint. The phototoxicity/photoallergenicity endpoints were evaluated based on ultraviolet/visible (UV/Vis) spectra; cis-3-hexenyl tiglate is not expected to be phototoxic/photoallergenic. The environmental endpoints were evaluated; cis-3-hexenyl tiglate was found not to be Persistent, Bioaccumulative, and Toxic (PBT) as per the International Fragrance Association (IFRA) Environmental Standards, and its risk quotients, based on its current volume of use in Europe and North America (i.e., Predicted Environmental Concentration/Predicted No Effect Concentration [PEC/PNEC]), are <1.