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논문 기본 정보

자료유형
학술저널
저자정보
Min Kook Kim (Sungkyunkwan University) Kyu-Bong Kim (Dankook University) Joo Young Lee (The Catholic University of Korea) Seung Jun Kwack (Changwon National University) Yong Chan Kwon (Sungkyunkwan University) Ji Soo Kang (Sungkyunkwan University) Hyung Sik Kim (Sungkyunkwan University) Byung-Mu Lee (Sungkyunkwan University)
저널정보
한국독성학회 Toxicological Research Toxicological Research Vol.35 No.2
발행연도
2019.4
수록면
103 - 117 (15page)

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초록· 키워드

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The mixture of 5-chloro-2-methylisothiazol-3(2H)-one (CMIT) and 2-methylisothiazol-3(2H)-one (MIT), CMIT/MIT, is a preservative in cosmetics. CMIT/MIT is a highly effective preservative; however, it is also a commonly known skin sensitizer. Therefore, in the present study, a risk assessment for safety management of CMIT/MIT was conducted on products containing 0.0015% of CMIT/MIT, which is the maximum MIT level allowed in current products. The no observed adverse effect level (NOAEL) for CMIT/MIT was 2.8 ㎎/㎏ bw/day obtained from a two-generation reproductive toxicity test, and the skin sensitization toxicity standard value for CMIT/MIT, or the no expected sensitization induction level (NESIL), was 1.25 ㎍/㎠/day in humans. According to a calculation of body exposure to cosmetics use, the systemic exposure dosage (SED) was calculated as 0.00423 ㎎/㎏ bw/day when leave-on and rinse-off products were considered. Additionally, the consumer exposure level (CEL) amounted to 0.77512 ㎍/㎠/day for all representative cosmetics and 0.00584 ㎍/㎠/day for rinse-off products only. As a result, the non-cancer margin of safety (MOS) was calculated as 633, and CMIT/MIT was determined to be safe when all representative cosmetics were evaluated. In addition, the skin sensitization acceptable exposure level (AEL)/CEL was calculated as 0.00538 for all representative cosmetics and 2.14225 for rinse-off products; thus, CMIT/MIT was considered a skin sensitizer when all representative cosmetics were evaluated. Current regulations indicate that CMIT/MIT can only be used at concentrations 0.0015% or less and is prohibited from use in other cosmetics products. According to the results of this risk assessment, the CMIT/MIT regulatory values currently used in cosmetics are evaluated as appropriate.

목차

Abstract
INTRODUCTION
COMMERCIAL USE
HAZARD IDENTIFICATION
HAZARD DETERMINATION
EXPOSURE ASSESSMENT
RISK CHARACTERIZATION
SUMMARY AND CONCLUSION
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2019-513-000530619