1. Solubility: Hauv dej,Nigrosine Dubtsim cov kua dej xiav-ntsuab, qhia txog kev solubility zoo, uas tso cai rau nws cuam tshuam nrog hydroxyl lossis amino pawg hauv cov ntaub ntawv fiber ntau, yog li ua tiav cov dyeing.Qhov sib ntxiv ntawm sodium hydroxide tov ua rau tsim cov xim av-ntsuab precipitate.Nigrosine Black yog soluble hauv ethanol, nthuav tawm xim xiav, thiab nyob rau hauv cov concentrated sulfuric acid, nws kuj tshwm xiav;Thaum dilution, nws hloov mus rau ntshav nrog ib tug precipitate forming.Nigrosine Black yog ze li ntawm ether, acetone, benzene, chloroform, roj av ether, thiab kua paraffin.
2. Cia:Nigrosine Dubyuav tsum tau khaws cia kom deb ntawm kev sib cuag nrog cov neeg ua haujlwm oxidizing thaum siv.Thaum khaws cia, xyuas kom meej tias lub thawv ntim khoom kaw nruj nreem thiab khaws cia rau hauv qhov chaw txias thiab qhuav.
| Specification |
| Khoom npe | Nigrosine Dub Granular |
| CINO. | Acid Dub 2 (50420) |
| Qhov tshwm sim | Dub Shining Granular |
| Duab ntxoov ntxoo | Zoo ib yam li Standard |
| Lub zog | 100% |
| Moisture (%) | ≤ 6 |
| Tshauv (%) | ≤1.7 |
| Ceev ceev |
| Teeb | 5 ~ 6 |
| Soaping | 4 ~ 5 |
| Rubbing | Qhuav | 5 |
| | ntub | - |
