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(Chemistry) chem having a valency of six. Also: sexivalent


(ˈhɛk səˌveɪ lənt)

having a chemical valence of six.
References in periodicals archive ?
As part of the agreement, SII will ensure supply of IPV bulk to PBL, an important constituent of the Hexavalent vaccine, from its wholly owned subsidiary BBIO Netherlands having technology for making the IPV, earlier possessed by only three other vaccine manufacturers in the world.
PHE said the Hexavalent vaccine is already widely used with around 150 million doses having been given in 97 countries.
However, there has been a degree of inconsistency with corrosion resistance from these, and overall performance is not reliable or consistent enough when used with latest generation Hexavalent Chromium-free paint primers.
The first edition of IEC 62321:2008 was a stand-alone standard, which included introduction, test methods as well as mechanical sample preparation, for determining levels of lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr(VI)) contained in inorganic and organic compounds, and two types of brominated flame retardants, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) contained in electrotechnical products.
Cleanup of basements includes washing basement floors and walls to remove hexavalent chromium and applying sealants, installing drains and sump pumps when necessary to prevent recontamination of basement surfaces.
Due to the fact that they must develop in these temporary run-off formed pools, they are exposed to surrounding environmental contaminants such as hexavalent chromium.
Leather textile and fertilizer industry extensively use the chromium in both the trivalent and hexavalent forms.
The new regulation would establish a maximum contaminant level for hexavalent chromium--also known as chromium-6--that is five times less than the current total chromium standard.
Yet Gibb and his fellow soldiers were "exposed to hexavalent chromium without warning or protection," his suit says.
Environmental Protection Agency (EPA) is actively moving toward setting a national limit for hexavalent chromium, also referred to as "hexachrome," "chrome-6," "Cr-6" and "Cr-IV.
From February, the National Immunisation Programme (NIP) of the ministry will include a liquid hexavalent combined vaccine against diphtheria, pertussis (whooping cough), tetanus, poliomyelitis, haemophilus influenzae type B (HIB) and hepatitis B.
A carcinogenic form of chromium, hexavalent chromium, is present is some dietary supplements, according to new tests by ConsumerLab.