Barium Chromate 10294-40-3 Ti a lo bi Pigment Anti-ipata
Alaye ọja
| Oruko | Barium chromate |
| nọmba CAS | 10294-40-3 |
| Ilana molikula | BaCrO4 |
| Ìwúwo molikula | 253.3207 |
| Nọmba EINECS | 233-660-5 |
| Ojuami yo | 210°C (oṣu kejila) (tan.) |
| iwuwo | 4.5 g/mL ni 25 °C (tan.) |
| Fọọmu | Lulú |
| Specific walẹ | 4.5 |
| Àwọ̀ | Yellow |
| Omi solubility | Ailopin ninu omi. Tiotuka ninu awọn acids ti o lagbara. |
| Iwontunwonsi ojoriro Constant | pKsp: 9.93 |
| Iduroṣinṣin | Idurosinsin. Oxidizer. Le fesi ni agbara pẹlu idinku awọn aṣoju. |
Awọn itumọ ọrọ sisọ
Bariumcromate; BariumChromate, Puratronic (MetalsBasis); Bariumchromate: chromicacid, bariumsalt; BARIUMCHROMATE; ci77103; cipigmentyellow31; Chromicacid (H2-CrO4), bariumsalt (1: 1); Chromicacid, bariumsalt (1: 1)
Kemikali Properties
Awọn oriṣi meji ti barium chrome ofeefee, ọkan jẹ barium chromate [CaCrO4], ati ekeji jẹ barium potasiomu chromate, eyiti o jẹ iyọ ti barium chromate ati potasiomu chromate. Ilana kemikali jẹ BaK2 (CrO4) 2 tabi BaCrO4 · K2CrO4. Chromium Barium Oxide jẹ ọra-ofeefee lulú, tiotuka ni hydrochloric acid ati nitric acid, pẹlu lalailopinpin kekere tinting agbara. Koodu boṣewa kariaye fun barium chromate jẹ ISO-2068-1972, eyiti o nilo pe akoonu ti barium oxide ko kere ju 56% ati akoonu ti chromium trioxide ko kere ju 36.5%. Barium potasiomu chromate jẹ lẹmọọn-ofeefee lulú. Nitori potasiomu chromate, o ni diẹ ninu omi solubility. Iwuwo ojulumo rẹ jẹ 3.65, atọka itọka rẹ jẹ 1.9, gbigba epo rẹ jẹ 11.6%, ati iwọn didun ti o han gbangba jẹ 300g/L.
Ohun elo
Barium chromate ko le ṣee lo bi awọ awọ. Nitoripe o ni chromate, o ni ipa ti o jọra si ofeefee chrome zinc nigba lilo ninu awọ antirust. Barium potasiomu chromate ko le ṣee lo bi awọ awọ, ṣugbọn o le ṣee lo nikan bi awọ-ara ipata, eyiti o le rọpo apakan ti ofeefee zinc. Lati iwoye ti aṣa idagbasoke, o jẹ ọkan ninu awọn oriṣiriṣi ti awọn pigments egboogi-ipata chromate ti o wa ni ile-iṣẹ ti a bo.
