Thiodiglycolic anhydride (CAS # 3261-87-8)
| Risk Codes | R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. R34 - Ua rau kub hnyiab R22 - Ua phem yog tias nqos |
| Kev nyab xeeb piav qhia | S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. |
| UN IDs | ib 3261 |
| Kev Ceeb Toom | Corrosive |
| Packing Group | III |
Taw qhia
Cov tshuaj formula yog C6H8O4S, feem ntau hu ua TDGA. Cov hauv qab no yog cov lus piav qhia ntawm nws qhov xwm txheej, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
Thiodiglycolic anhydride yog cov xim tsis muaj xim rau lub teeb daj nrog cov ntxhiab tsw pungent. Nws tuaj yeem yaj hauv ntau cov kuab tshuaj organic, xws li cawv, ethers thiab esters.
Siv:
Thiodiglycolic anhydride feem ntau yog siv los ua cov tshuaj reagent, feem ntau yog rau kev sib txuas ntawm cov tshuaj thiab cov kuab tshuaj. Nws yog dav siv hauv kev lag luam roj hmab, yas thiab xim, thiab feem ntau yog siv rau hauv kev npaj cov catalysts, antioxidants thiab plasticizers.
Txoj kev:
Thiodiglycolic anhydride tuaj yeem npaj los ntawm cov tshuaj tiv thaiv ntawm sodium sulfur chloride (NaSCl), acetic anhydride (CH3CO2H) thiab trimethylamine (N(CH3) 3). Cov tshuaj tiv thaiv tshwj xeeb yog raws li hauv qab no:
NaSCl CH3CO2H N(CH3)3 → C6H8O4S NaCl (CH3)3N-HCl
Cov ntaub ntawv kev nyab xeeb:
Thiodiglycolic anhydride ua rau khaus thiab tuaj yeem ua rau mob ntawm qhov muag thiab tawv nqaij ntawm qhov siab. Kev tiv thaiv tsim nyog yuav tsum tau ua thaum siv, xws li hnav hnab looj tes, tsom iav thiab khaub ncaws tiv thaiv. Nyob rau tib lub sij hawm, xyuas kom meej tias nws yog siv nyob rau hauv ib tug zoo-ventilated qhov chaw thiab tsis txhob nqus nws vapor. Thaum muaj kev sib cuag, yaug nrog dej kom ntau thiab nrhiav kev kho mob sai li sai tau. Thaum lub sij hawm cia, Thiodiglycolic anhydride yuav tsum tau khaws cia rau hauv lub thawv kaw, kom deb ntawm hluav taws thiab oxidizing tus neeg sawv cev.
