About Chromates

Chromate Ion

Chromate salts contain the anion CrO42-, while dichromate salts contain the dichromate anion, Cr2O72-. Both classes of compounds contain chromium in the oxidation state +6--hexavalent chromium--and act as strong oxidizing agents. Water soluble chromates are frequently used in chrome electroplating processes used to protect underlying metals from corrosion or improve paint adhesion. Chromate conversion coating, a process which uses oxidants to passivate certain metal alloy surfaces, may utilize chromate derived from chromic acid. Non-soluble chromates have strong colors and have been used as pigments. Because hexavalent chromium is now known to be toxic, chromate waste disposal is regulated and chromate usage is declining in areas where there are suitable substitutes. In particular, chromium pigments such as chrome yellow, widely recognized as the color of American school buses, have largely fallen out of use in favor of safer pigment compounds.

Recent Research & Development for Chromates

Effect of Hydrogen Sulfide on Kidney Injury in Rat Model of Crush Syndrome., Tekşen, Yasemin, Kadıoğlu Emine, Koçak Cengiz, and Koçak Havva , J Surg Res, 2019 Mar, Volume 235, p.470-478, (2019)

Structural characteristics of cake layer in membrane bioreactor with chromate exposure., Zhou, Lijie, Ye Biao, and Xia Siqing , Ecotoxicol Environ Saf, 2019 Mar, Volume 169, p.583-589, (2019)

Sub-lethal effects of waterborne copper in early developmental stages of rainbow trout (Oncorhynchus mykiss)., Santos, Shannon Weeks, Cachot Jérôme, Gourves Pierre-Yves, Clérandeau Christelle, Morin Bénédicte, and Gonzalez Patrice , Ecotoxicol Environ Saf, 2019 Apr 15, Volume 170, p.778-788, (2019)

A nanocomposite probe consisting of carbon quantum dots and phosphotungstic acid for fluorometric determination of chromate(VI) with improved selectivity., Liu, Yushan, Chen Zhijun, Li Wei, Ma Chunhui, Wu Peng, Wu Xueyun, Li Shujun, and Liu Shouxin , Mikrochim Acta, 2018 Sep 20, Volume 185, Issue 10, p.470, (2018)

Highly Performing Chromate-Based Ceramic Anodes (YCaCrCu O) for Low-Temperature Solid Oxide Fuel Cells., A Hussain, Mohammed, Pan Ke-Ji, Huang Yi-Lin, Robinson Ian A., Gore Colin, and Wachsman Eric D. , ACS Appl Mater Interfaces, 2018 Oct 24, Volume 10, Issue 42, p.36075-36081, (2018)

Using chromate to investigate the impact of mineral-organic contact time on the surface reactivity of goethite., Hales-Messenger, Stacey, and Swindle Andrew , Environ Sci Process Impacts, 2018 Oct 17, Volume 20, Issue 10, p.1469-1478, (2018)

A luminescent zinc(ii) coordination polymer with unusual (3,4,4)-coordinated self-catenated 3D network for selective detection of nitroaromatics and ferric and chromate ions: a versatile luminescent sensor., Zhang, Ya-qian, Blatov Vladislav A., Zheng Tian-Rui, Yang Chang-Hao, Qian Lin-Lu, Li Ke, Li Bao-Long, and Wu Bing , Dalton Trans, 2018 May 01, Volume 47, Issue 17, p.6189-6198, (2018)

Enhanced Reactivity and Electron Selectivity of Sulfidated Zerovalent Iron toward Chromate under Aerobic Conditions., Li, Jinxiang, Zhang Xueying, Liu Meichuan, Pan Bingcai, Zhang Weiming, Shi Zhong, and Guan Xiaohong , Environ Sci Technol, 2018 Mar 06, Volume 52, Issue 5, p.2988-2997, (2018)

Density functional theory modeling of chromate adsorption onto ferrihydrite nanoparticles., Kubicki, James D., Kabengi Nadine, Chrysochoou Maria, and Bompoti Nefeli , Geochem Trans, 2018 Mar 01, Volume 19, Issue 1, p.8, (2018)

Crystal structure of silver [(propane-1,3-diyl-dinitrilo-κ2N,N')-tetra-acetato-κ4O,O',O'',O''']chromate(III) from synchrotron X-ray data., Moon, Dohyun, Ryoo Keon Sang, and Choi Jong-Ha , Acta Crystallogr E Crystallogr Commun, 2018 Mar 01, Volume 74, Issue Pt 3, p.278-281, (2018)

The effect of electron competition on chromate reduction using methane as electron donor., Lv, Pan-Long, Zhong Liang, Dong Qiu-Yi, Yang Shi-Lei, Shen Wei-Wei, Zhu Quan-Song, Lai Chun-Yu, Luo An-Cheng, Tang Youneng, and Zhao He-Ping , Environ Sci Pollut Res Int, 2018 Mar, Volume 25, Issue 7, p.6609-6618, (2018)

Discerning three novel chromate reduce and transport genes of highly efficient Pannonibacter phragmitetus BB: From genome to gene and protein., Chai, Liyuan, Ding Chunlian, Tang Chongjian, Yang Weichun, Yang Zhihui, Wang Yangyang, Liao Qi, and Li Jiawei , Ecotoxicol Environ Saf, 2018 Jul 04, Volume 162, p.139-146, (2018)

Rhenium-Doped and Stabilized MoS Atomic Layers with Basal-Plane Catalytic Activity., Yang, Shi-Ze, Gong Yongji, Manchanda Priyanka, Zhang Yu-Yang, Ye Gonglan, Chen Shuangming, Song Li, Pantelides Sokrates T., Ajayan Pulickel M., Chisholm Matthew F., et al. , Adv Mater, 2018 Dec, Volume 30, Issue 51, p.e1803477, (2018)

Strong chromate-adsorbent based on pyrrolic nitrogen structure: An experimental and theoretical study on the adsorption mechanism., Ko, Young-Jin, Choi Keunsu, Lee Soonjae, Jung Kyung-Won, Hong Seokwon, Mizuseki Hiroshi, Choi Jae-Woo, and Lee Wook-Seong , Water Res, 2018 Aug 17, Volume 145, p.287-296, (2018)

Carbon-dependent chromate toxicity mechanism in an environmental Arthrobacter isolate., Field, Erin K., Blaskovich John P., Peyton Brent M., and Gerlach Robin , J Hazard Mater, 2018 Aug 05, Volume 355, p.162-169, (2018)