呋喃是指含一個氧雜原子的五元芳雜環化合物,存在于松木焦油中。呋喃的蒸氣遇到被鹽酸浸濕過的松木片時會呈現綠色,叫做松木反應,可用來鑒定呋喃的存在。
呋喃是指含一個氧雜原子的五元芳雜環化合物,存在于松木焦油中。呋喃的蒸氣遇到被鹽酸浸濕過的松木片時會呈現綠色,叫做松木反應,可用來鑒定呋喃的存在。
2042711 貨期咨詢
¥ ?è????? -1g
2042797 貨期咨詢
¥ ??????? -1g
2042929 貨期咨詢
¥ ?ú?ú??? -1g
2042995 貨期咨詢
¥ úǐú???? -1g
2043087 貨期咨詢
¥ è?ǐ???? -1g
2043093 貨期咨詢
¥ ú?????? -1g
2043128 貨期咨詢
¥ ???è??? -1g
2043227 貨期咨詢
¥ ???ú??? -1g
2043347 貨期咨詢
¥ ??ǐè??? -1g
2043455 貨期咨詢
¥ ??ǐè??? -1g
2043548 貨期咨詢
¥ ??????? -1g
2043558 貨期咨詢
¥ ??ǐ???? -1g
2043585 貨期咨詢
¥ ??????? -1g
2043641 貨期咨詢
¥ ???ǐ??? -1g
2043742 貨期咨詢
¥ ??ǐè??? -1g
2043791 貨期咨詢
¥ ?è????? -1g
2043871 貨期咨詢
¥ ?úèú??? -1g
2043943 貨期咨詢
¥ è?ǐ???? -1g
2043958 貨期咨詢
¥ ???ǐ??? -1g
2043961 貨期咨詢
¥ ??è???? -1g
2043983 貨期咨詢
¥ ??????? -1g
2044069 貨期咨詢
¥ ??ǐ???? -1g
2044157 貨期咨詢
¥ ?è?ú??? -1g
2044253 貨期咨詢
¥ ??è???? -1g
2044254 貨期咨詢
¥ ???è??? -1g
2044346 貨期咨詢
¥ ú?????? -1g
2044361 貨期咨詢
¥ èǐǐ???? -1g
2044415 貨期咨詢
¥ ??????? -1g
2044448 貨期咨詢
¥ ǐè????? -1g
2044455 貨期咨詢
¥ è?ǐ???? -1g
共 10153 個產品,每頁顯示 30 個。
現貨供應
專業護航
售后無憂
品質保障
無需湊單