This study identifies the effect of the agent depending on environment change and conducted basic study to prepare criteria for stable application. Dancheong sample, which is similar to wooden cultural heritage, was manufactured to study the effect of the agent on dancheong. Regular observation on the samples located in inland and shoreline area in the country detected visible phenomena. Whitening, melting, peeling were observed, especially whitening was most frequently observed. This can be interpreted that whitening occurs when calcium carbonate reacts to phosphate system, a main ingredient of flame-proofing agent.

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