Benzidine (CAS # 92-87-5)
| Risk Codes | R45 - Tej zaum yuav ua rau mob qog noj ntshav R22 - Ua phem yog tias nqos R50/53 - Muaj tshuaj lom heev rau cov kab mob hauv dej, tuaj yeem ua rau muaj kev cuam tshuam ntev hauv cov dej hauv dej. R52/53 - Ua phem rau cov kab mob hauv dej, tuaj yeem ua rau muaj kev cuam tshuam ntev rau hauv dej hiav txwv. R39/23/24/25 - R23/24/25 – Toxic los ntawm inhalation, nyob rau hauv kev sib cuag nrog daim tawv nqaij thiab yog hais tias nqos. R11 - Cov nplaim hluav taws kub heev R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. R51/53 - Cov tshuaj lom rau cov kab mob hauv dej, tuaj yeem ua rau muaj kev cuam tshuam ntev rau hauv dej hiav txwv. R67 - Vapors tuaj yeem ua rau qaug zog thiab kiv taub hau |
| Kev nyab xeeb piav qhia | S53 - Tsis txhob raug - tau txais cov lus qhia tshwj xeeb ua ntej siv. S45 - Thaum muaj xwm txheej lossis yog tias koj tsis xis nyob, nrhiav kev kho mob tam sim ntawd (qhia daim ntawv lo thaum twg ua tau.) S60 - Cov khoom no thiab nws lub thawv yuav tsum tau muab pov tseg raws li cov khoom pov tseg. S61 - Tsis txhob tso tawm rau ib puag ncig. Xa mus rau cov lus qhia tshwj xeeb / cov ntaub ntawv kev nyab xeeb. S36/37 - Hnav cov khaub ncaws tiv thaiv thiab hnab looj tes tsim nyog. S16 - Khaws kom deb ntawm qhov chaw hluav taws xob. S7 – Khaws lub thawv kaw kom nruj. S36 - Hnav khaub ncaws tiv thaiv zoo. S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. |
| UN IDs | UN 1885 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | dc9625000 ua |
| FLUKA BRAND F CODE | 8 |
| HS Code | 29215900 ib |
| Hazard Class | 6.1 (a) |
| Packing Group | II |
| Toxicity | Mob qhov ncauj LD50 rau nas 214 mg/kg, nas 309 mg/kg (quoted, RTECS, 1985). |
Taw qhia
Benzidine (tseem hu ua diphenylamine) yog cov organic compound. Cov hauv qab no yog kev qhia txog nws qhov xwm txheej, kev siv, kev tsim khoom thiab cov ntaub ntawv kev nyab xeeb:
Zoo:
- Cov tsos mob: Benzidine yog dawb rau lub teeb daj crystalline khoom.
- Solubility: insoluble hauv dej, soluble hauv organic solvents xws li cawv, ethers, thiab lwm yam.
- Cim: Nws yog ib qho electrophile uas muaj cov khoom ntawm cov tshuaj tiv thaiv electrophilic.
Siv:
- Benzidine yog dav siv nyob rau hauv lub teb ntawm organic synthesis. Nws tuaj yeem siv los ua cov khoom siv raw thiab hluavtaws intermediate rau cov tshuaj xws li dyes, pigments, plastics, thiab lwm yam.
Txoj kev:
- Benzidine yog ib txwm npaj los ntawm dinitrobiphenyl txo, hluav taws xob tshem tawm haloaniline, thiab lwm yam.
- Cov kev npaj niaj hnub no suav nrog cov organic synthesis ntawm aromatic amines, xws li cov tshuaj tiv thaiv ntawm substrate diphenyl ether nrog amino alkanes.
Cov ntaub ntawv kev nyab xeeb:
- Benzidine yog tshuaj lom thiab tuaj yeem ua rau khaus thiab puas rau tib neeg lub cev.
- Thaum tuav benzidine, yuav tsum tau saib xyuas kom tsis txhob sib chwv ntawm daim tawv nqaij thiab nqus tau pa, thiab cov khoom siv tiv thaiv xws li hnab looj tes, tsom iav tiv thaiv, thiab lub ntsej muag tiv thaiv yuav tsum hnav yog tias tsim nyog.
- Thaum benzidine nkag mus rau hauv daim tawv nqaij lossis qhov muag, nws yuav tsum tau yaug tam sim ntawd nrog dej ntau.
- Thaum khaws cia thiab siv benzidine, saib xyuas kom tsis txhob muaj kev sib cuag nrog cov organic teeb meem thiab oxidants tiv thaiv hluav taws los yog tawg.
