CO OZNACZA SŁOWO INDOPHENOL
Indofenol
Indofenol jest sztucznym błękitnym barwnikiem metachromatycznym, otrzymanym w wyniku działania fenolu na pewne pochodne azotu chinonu. Indofenol przypomina kolorowy indygo w wyglądzie. Dichlorofenol-indofenol, postać indofenolu, jest często stosowany do oznaczania obecności witaminy C lub kwasu askorbinowego. Powstanie indofenolu służy do oznaczania amoniaku i paracetamolu metodą spektrofotometrii. Błękit indofenolowy jest zupełnie inną cząsteczką o systematycznym nazwie N - 1,4-naftochinonoimina.
Definicja słowa indophenol w słowniku
Definicja indofenolu w słowniku jest pochodną chinoniminy. Wzór: HOC6H4NC6H4O. Inną definicją indofenolu jest jakakolwiek klasa pochodnych tego związku, szczególnie jeden z niebieskich lub zielonych barwników, które są stosowane do wełny i bawełny.
KSIĄŻKI POWIĄZANE ZE SŁOWEM «INDOPHENOL»
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1
Lab Manual in Biochemistry: Immunology and Biotechnology
THIRTY SEVEN AIM: To estimate ascorbic acid by titration using 2,6-
dichlorophenol indophenol. PRINCIPLE Vitamins are essential components of a
balanced diet, and their absence leads to specific deficiency diseases.
Depending on their ...
2
Flow Injection Analysis: A Practical Guide
The standard method is the classical indophenol blue reaction (9-12). Ammonia
reacts with hypochlorite to form monochloramine which in turn reacts with phenol
to form indophenol blue. Nitroprusside ions are sometimes used as a catalyst.
B. Karlberg, G.E. Pacey,
1989
3
Food Analysis: Quality, Adulteration, and Tests of Identity
Standard indophenol solution - dissolve 0.05g 2 , 6-dichloro- pheno 1-
indophenol in water, dilute to 100 ml and filter. Prepare freshly. 2. Standard
ascorbic acid solution - dissolve 0.0500g of pure ascorbic acid in 60 ml 20%
metaphosphoric ...
Food and Agriculture Organization of the United Nations,
1986
4
Food Analysis Laboratory Manual
Dilute to volume immediately before use with the metaphosphoric acid – acetic
acid solution (see below for preparation of this solution). Indophenol solution –
dye ○○ To 50 ml deionized distilled (dd) water in a 150-ml beaker, add and stir
to ...
5
Hands-on Science: Nutrition, Mind, And Body
You will use a chemical known as indophenol as an indicator. It normally is a
bluish liquid, but it turns colorless in the presence of vitamin C. You can get a
close approximation of the amount of vitamin C that is present when using
indophenol ...
Carl Raab, Joel Beller,
1999
6
Nitrogen in Agricultural Systems
In the last 20 yr, colorimetric techniques, such as indophenol blue (Dorich and
Nelson, 1983) or sodium salicylate-hypochlorite (Gentry and Willis, 1988) have
become more common. This is due to the increase in the number of
autoanalyzers ...
James Stuart Schepers, William Raun,
2008
Based on the Berthelot reaction between ammonia, phenol and hypochloride at
alkaline pH to form the indophenol blue. Although method (1) is more sensitive, it
is generally multi-stage and often uses organic solvent extraction so that its ...
8
Science Educator's Guide to Laboratory Assessment
Preparation of Starch-Iodine Solution There are two different preparations (starch
-iodine or indophenol) that may be used for the vitamin C indicator solution.
Neither solution is more accurate than the other. The starch-iodine mixture is
much ...
9
Competition Science Vision
OH MONO Phenol (Brown or Red) NO NOH p-nitrosophenol Mono oxime of
quinone The mono oxime then condenses with remaining phenol in presence of
cone. H2SO4 to give deep blue or green solution of indophenol monosul- phate.
10
Handbook of Acid-Base Indicators
A B C D E F G H I J K L M INDOPHENOL Other Names Indophenol;
Benzenoneindophenol; Phenolindophenol CA Index Name 2,5-Cyclohexadien-1
-one, 4-[(4-hydroxyphenyl)imino]- CAS Registry Number 500-85-6 Merck Index
Number Not ...
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «INDOPHENOL»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
indophenol w wiadomościach.
Why The Rare Substance These Frogs Produce Is Named After The …
This closely resembles the structure of indophenol, an artificial blue dye with two structures linked by a nitrogen atom. It seems there's a really ... «io9, Lut 15»
How to: archive and back up photos
... adjustor unpersuasibleness transfix expectedness woos copending velyarde nonrevocable sizars autogenetically legative indophenol centra ... «What Digital Camera, Wrz 10»
Ranasmurfin, a Smurf-blue protein
... acid arrangement where the proteins bind the zinc, which creates a structure that is somewhat similar to known blue dyes like indophenol. «Ars Technica, Wrz 08»