Hlau (III) oxide CAS 1309-37-1
| Hazard Cov Cim | Xi-xaj |
| Risk Codes | R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| 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. |
| UN IDs | TIAB SA 1376 |
Hlau (III) oxide CAS 1309-37-1 qhia
zoo
Txiv kab ntxwv-liab mus rau purplish-liab trigonal crystalline hmoov. Relative ntom ntom 5. 24. Melting point 1565 °C (decomposition). Insoluble hauv dej, soluble hauv hydrochloric acid, sulfuric acid, me ntsis soluble hauv nitric acid thiab cawv. Thaum kub hnyiab, cov pa oxygen tso tawm, uas tuaj yeem txo cov hlau los ntawm hydrogen thiab carbon monoxide. Zoo dispersion, muaj zog tinting thiab zais zog. Tsis muaj roj permeability thiab tsis muaj dej permeability. Kub-resistant, lub teeb-resistant, acid-resistant thiab alkali-resistant.
Txoj kev
Muaj cov kev npaj ntub thiab qhuav. Cov khoom ntub dej muaj cov muaju zoo, cov khoom mos, thiab yooj yim rau zom, yog li lawv tsim nyog rau cov xim. Cov khoom qhuav qhuav muaj cov muaju loj thiab cov khoom nyuaj, thiab tsim nyog rau cov khoom sib nqus thiab polishing thiab sib tsoo cov ntaub ntawv.
Txoj kev ntub dej: ib qho nyiaj ntawm 5% ferrous sulfate daws sai sai nrog cov kua dej qab ntsev ntau dhau (ib qho alkali ntau dhau ntawm 0.04 ~ 0.08g / mL), thiab huab cua nkag rau hauv chav tsev kub kom nws tag nrho tig mus rau hauv. ib qho xim liab-xim av hlau hydroxide colloidal tov, uas yog siv los ua tus siv lead ua nucleus rau depositing hlau oxide. Nrog rau saum toj no-hais siv lead ua nucleus raws li tus neeg nqa khoom, nrog ferrous sulfate li nruab nrab, huab cua yog qhia, ntawm 75 ~ 85 ° C, nyob rau hauv cov xwm txheej ntawm muaj hlau hlau, ferrous sulfate reacts nrog cov pa hauv huab cua. los tsim ferric oxide (xws li, hlau liab) tso rau ntawm cov siv lead ua nucleus, thiab cov sulfate hauv cov tshuaj reacts nrog cov hlau hlau kom rov tsim ferrous. sulfate, thiab ferrous sulfate yog oxidized rau hauv hlau liab los ntawm cov huab cua thiab mus txuas ntxiv mus, yog li ntawd lub voj voog xaus ntawm tag nrho cov txheej txheem los tsim cov hlau oxide liab.
Txoj kev qhuav: nitric acid reacts nrog cov ntawv hlau los ua ferrous nitrate, uas yog txias thiab crystallized, dehydrated thiab qhuav, thiab calcined ntawm 600 ~ 700 ° C rau 8 ~ 10h tom qab sib tsoo, thiab ces ntxuav, qhuav thiab crushed kom tau hlau oxide. cov khoom liab. Hlau oxide daj tuaj yeem siv los ua cov khoom siv raw, thiab hlau oxide liab tuaj yeem tau los ntawm calcination ntawm 600 ~ 700 ° C.
siv
Nws yog ib qho inorganic pigment thiab yog siv los ua cov xim pleev xim rau hauv kev lag luam txheej. Nws kuj yog siv los ua cov xim rau cov roj hmab, cov khoom siv marble, terrazzo rau hauv av, cov xim thiab cov khoom siv rau cov yas, asbestos, tawv tawv, tawv polishing muab tshuaj txhuam, thiab lwm yam. tsim cov khoom sib nqus ferrite.
kev ruaj ntseg
Ntim hauv hnab woven lined nrog polyethylene hnab yas, los yog ntim rau hauv 3-txheej kraft ntawv hnab, nrog ib tug luj ntawm 25kg ib lub hnab. Nws yuav tsum tau muab cia rau hauv qhov chaw qhuav, tsis txhob ntub dej, tsis txhob kub siab, thiab yuav tsum tau cais tawm ntawm cov kua qaub thiab alkali. Lub sijhawm khaws cia zoo ntawm cov pob tsis tau qhib yog 3 xyoos. Toxicity thiab kev tiv thaiv: Cov plua plav ua rau pneumoconiosis. Qhov siab tshaj plaws tso cai rau huab cua, hlau oxide aerosol (soot) yog 5mg / m3. Them mloog rau cov plua plav.
