ChemSub Online: The Free Web Portal and Information System on Chemical Substances from around the World: Glossary and Acronyms - Letter Z.
Provides information about:
- Chemical Inventories: Chemical inventory, AICS, DSL NDSL, EINECS, ELINCS, IECSC, NLP, NZIoC, TSCA.
- Registry Number, EC Number (EINECS, ELINCS, NLP), Chemical Name, Molecular Formula, Structure Formula.
- TSCA: TSCA Inventory List, TSCA Compliance Guide, TSCA Inventory Database, Current TSCA Inventory, Need TSCA Chemical List, Find Tsca, U. S. TSCA Inventory List, Many research chemists use updated TSCA Tracker to find new chem names.
- REACH: REACH compliance, REACH & GHS, REACHsuite, EU REACH IT Solutions, IT solutions for managing REACH compliance.

- Chemical Super Lists and Inventories:
Chemical Carcinogenesis Research Information System (CCRIS),
European Inventory of Existing Commercial Chemical Substances (EINECS),
European List of Notified Chemical Substances (ELINCS),
Europan chemical Substances information System (ESIS),
Hazardous Substances Data Bank (HSDB),
High Volume Industrial Chemical List (HVICL),
HSNO Chemical Classification and Information Database (CCID),
Inventory of Existing Chemical Substances Produced or Imported in China (IECSC),
Toxic Substances Control Act (TSCA),
ChemBlink, EPA HPV Challenge, EPA HPVIS, EU HPV-LPV, HSNO CCID, TOXLINE.
- Chemicals and Chemistry: Formaldehyde, chemicals, chemical substances, chemistry, Baytouch Systems.
- GHS, Globally Harmonized System of Classification and Labelling of Chemicals, Global harmonisiertes System zur Einstufung und Kennzeichnung von Chemikalien, SGH, Système général harmonisé de classification et d'étiquetage des produits chimiques, 化学品分类及标记全球协调制度, 化学品の分類および表示に関する世界調和システム.
- InChI, InChIKey, MOSFIJXAXDLOML-UHFFFAOYSA-N, smiles, IUPAC Name.

ChemSub Online: The Free Web Portal and Information System on Chemical Substances from around the World: Glossary and Acronyms - Letter Z.
Provides information about:
- Chemical analysis, Dedicated Analytical Solutions for chemical analysis from Foss, Brewing Lab Services, Siebel Institute Lab Services Brewing Analytical Testing.
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- Chemical lists free.
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- Chemical Testing Find Chemical Testing Laboratories.
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- Endocrine disruptor, modulateur endocrinien, perturbateur endocrinien, endokrine disruptoren, 内分泌攪乱物質, 內分泌干擾素.
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- The Dow Chemical Company, The leading chemical and plastics manufacturer. Test Labs Directory, ASTM Free Online Lab Directory Search by ASTM Standards.

ChemSub Online: The Free Web Portal and Information System on Chemical Substances from around the World: Glossary and Acronyms - Letter Z.
Provides information about:
- Återvinning symbol, алкохол, гераниол, деканол, етилов алкохол, натриев пропионат, пентанол.
- エタプロコール, テオブロミン, 消毒用エタノール, 消毒用エタライト, 邻苯二甲酸酯.
- 5-diphenyl-1 4-pentadien-3-one, 1,2-benzenedicarboxylic acid, di-c6-8-branched alkyl esters, c7-rich, 1,6 hexanediol, 1-methoxy-2-propyl acetate, 1-pentanol, 2 метилбутан, 2,4-pentanedione, 2-(2-butoxyethoxy)ethanol, 2-methyl-3-butyn-2-ol, 2-methylpropanal, 3,7-dimethyl-6-octenal, 3-(diethylamino)cyclohex-3-enol, 3-methylbutanal, 4-butyrolactone, 7-methyltheophylline.
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ZCHFP:
Association of Chemical and Pharmaceutical Industry of the Slovak Republic.

The Association of Chemical and Pharmaceutical Industry of the Slovak Republic was established, as a voluntary association of entrepreneurial entities active in the field of the Slovak chemistry and pharmacy, on November 30, 1991. At present it represents 47 members employing more than 24,000 people.
 
ZEAD:
Zeolite Adsorbents.

Zeolites are synthetically produced crystalline metal alumino-silicates that have been activated for adsorption by removing their water of hydration. Because little or no change in structure occurs during this dehydration, the process creates unusually porous adsorbent structures that have strong affinity for water and certain other gases and liquids. The crystalline framework can be adapted through ion-exchange with metallic cations.

In contrast to other adsorbents, the pores of any particular type of synthetic zeolite are precisely uniform in size and molecular dimensions. Depending on the size of these pores, molecules may be readily adsorbed, slowly adsorbed or completely excluded. This “sieve-like” selectivity, based on molecule size plus a selective preference for polar or polarizable molecules and a high capacity over a wide range of operating conditions, give zeolites a high level of adsorption efficiency. Due to their unique characteristics, zeolites are commercially used for drying and purifying liquids and gases, for separation processes and for numerous other industrial and consumer applications.
 
Zeolites:
Zeolites are abundant in nature and are commonly found in rocks of volcanic origin. When rapidly heated, stones containing these materials are observed to release water and appear to boil.

The name "zeolite" which is derived from the Greek words Zeo and Lithos reflects this property as it translates as "stone that boils". Zeolites, often also called molecular sieves, are used in a wide range of applications including detergents, catalysts and desiccants.
 
Zinc:
Chemical element in the periodic table that has the symbol Zn and atomic number 30. In some historical and sculptural contexts, it is (or was) known as spelter.

Zinc is a moderately-reactive bluish-white metal that tarnishes in moist air and burns in air with a bright greenish flame, giving off plumes of zinc oxide. It reacts with acids, alkalis and other non-metals. If not completely pure, zinc reacts with dilute acids to release hydrogen. The one common oxidation state of zinc is +2. From 100°C to 210°C zinc metal is malleable and can easily be beaten into various shapes. Above 210°C, the metal becomes brittle and will be pulverized by beating.

An essential trace element that works in close association with vitamins and over 100 enzymes. It is, therefore, involved in almost every physiological function in the body. It forms part of a protein (gustin) in saliva and plays a role in taste and smell. It also helps to heal wounds. Although there is only a little evidence that taking extra zinc can improve athletic performance, some weight-lifters take zinc supplements in the belief that it increases stamina by prolonging muscle contractions.
Zinc deficiency may cause loss of taste and smell, and a reduction of appetite. A deficiency can slow down the healing of wounds (zinc oxide ointment is applied to abrasions to accelerate healing), retard growth in children, and reduce the sperm count of adult males (the concentration of zinc in semen is 100 times greater than in the blood plasma).

The US recommended dietary allowance (RDA) for adults is 15 mg for males and 12 mg for females. The UK Reference Nutrient Intake for adults is 9.5 mg for males and 7.0 mg for females (lactating mothers require higher amounts). Zinc can be obtained from seafood (especially oysters and other shellfish), cereal crops, legumes, wheat germ, and yeast products. Zinc may bind to some constituents of dietary fibre, interfering with its absorption from the gut. Consequently, vegetarians may require a higher than normal intake of this element. As zinc is lost in urine and sweat, exercisers (especially those who train intensively) may also need zinc supplementation. However, zinc supplementation should not exceed the RDA because excessive amounts can have harmful effects including inhibition of copper absorption, which may lead to anaemia.
 
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