4-Heptanolide CAS Nr 105-21-5
| Hazard Cov Cim | Xi-xaj |
| Risk Codes | R38 - Irritating rau ntawm daim tawv nqaij R36/38 - Kab mob rau qhov muag thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | S36 - Hnav khaub ncaws tiv thaiv zoo. S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. |
| WGK Germany | 2 |
| RTECS | UA 3697000 |
| HS Code | 29322090 ib |
Taw qhia
α-propyl-γ-butyrolactone (tseem hu ua α-MBC) yog cov organic hnyav. Nws muaj cov xim tsis muaj xim thiab tsis muaj ntxhiab tsw hauv lub xeev thiab muaj qis qis ntawm evaporation ntawm chav tsev kub. Nov yog cov ntsiab lus hais txog α-propyl-γ-butyrolactone:
Zoo:
- α-propyl-γ-butyrolactone muaj cov solubility zoo heev thiab tuaj yeem yaj ntau cov organic xws li resins, xim thiab coatings.
- Cov lactone no tsis yog hluav taws kub, tab sis nws tuaj yeem tsim cov pa roj carbon monoxide ntawm qhov kub thiab txias.
Siv:
- α-Propyl-γ-butyrolactone yog dav siv nyob rau hauv industrial manufacturing txheej txheem rau cov kuab tshuaj, foams, xim, coatings, adhesives, thiab cov khoom yas.
Txoj kev:
- α-propyl-γ-butyrolactone feem ntau yog npaj los ntawm esterification ntawm γ-butyrolactone. Nyob rau hauv cov txheej txheem no, γ-butyrolactone reacts nrog acetone thiab ib tug tshaj ntawm hydrochloric acid los yog sulfuric acid yog ntxiv raws li ib tug catalyst.
Cov ntaub ntawv kev nyab xeeb:
- Thaum tuav α-propyl-γ-butyrolactone, tsis txhob sib cuag nrog daim tawv nqaij ntev thiab nqus tau pa.
- Kev ntsuas kev nyab xeeb tsim nyog thiab cov cai yuav tsum tau ua raws thaum khaws cia thiab tuav α-propyl-γ-butyrolactone.
