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79690

Sigma-Aldrich

Phosphotungstic acid hydrate

for microscopy

Synonyme(s) :

Tungstophosphoric acid

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About This Item

Formule linéaire :
H3[P(W3O10)4] · xH2O
Numéro CAS:
12501-23-4
Poids moléculaire :
2880.05 (anhydrous basis)
Numéro MDL:
MFCD00149915
Code UNSPSC :
12171500
ID de substance PubChem :
329768557
Nomenclature NACRES :
MA.02

Qualité

for microscopy

Niveau de qualité

200

Forme

powder or crystals

Impuretés

≤0.002% total nitrogen (N)

Perte

≤15% loss on drying

pH

2 (20 °C)

Pf

~95 °C (lit.)

Solubilité

water: 0.5 g/10 mL, clear, colorless

Traces d'anions

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤100 mg/kg

Traces de cations

Ca: ≤20 mg/kg
Cu: ≤5 mg/kg
Fe: ≤20 mg/kg
K: ≤50 mg/kg
Na: ≤50 mg/kg
Pb: ≤20 mg/kg
Zn: ≤5 mg/kg

Application(s)

diagnostic assay manufacturing
hematology
histology

Température de stockage

room temp

Chaîne SMILES 

O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O

InChI

1S/H3O4P.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h(H3,1,2,3,4);1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Clé InChI

AVFBYUADVDVJQL-UHFFFAOYSA-N

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Catégories apparentées

Description générale

Phosphotungstic acid hydrate is a heteropolyacid.It is a reagent suitable to detect alkaloids and nitrogenous bases. It is suitable for manufacturing organic pigments, and additives in the plating industry. It is known to impart water resistance to plastics, adhesives, and cement. It also is suitable as a catalyst for organic reactions.

Application

Phosphotungstic acid hydrate may be used as a staining agent for the transmission electron microscope (TEM) imaging of cetyltrimethylammonium bromide (CTAB) coated gold nanorods.It may be used in the preparation of:
  1. Phosphotungstic acid doped ormosil hybrid networks
  2. Niobia supported phosphotungstic acid (PTA) catalysts
  3. Titanium dioxide (TiO2) nanoparticles /phosphotungstic acid (HPW) films.

Autres remarques

Review of the folin phenol method for the quantitative determination of proteins

Pictogrammes

CorrosionExclamation markEnvironment
GHS05,GHS07,GHS09

Mention d'avertissement

Danger

Mentions de danger

H302,H314,H411

Classification des risques

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1C

Code de la classe de stockage

8B - Non-combustible corrosive hazardous materials

Classe de danger pour l'eau (WGK)

WGK 2

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificats d'analyse (COA)

Lot/Batch Number
BCCK0459
BCCK2438
BCCH6249
BCCJ0303
BCCG2758

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Tony Werner et al.
Scientific reports, 8(1), 5465-5465 (2018-04-05)
The most common allergen in fish, the highly-abundant protein β-parvalbumin, forms amyloid structures as a way to avoid gastrointestinal degradation and transit to the blood. In humans, the same amyloid structures are mostly associated with neurodegenerative disorders such as Alzheimer's
Tobias Riede et al.
Journal of speech, language, and hearing research : JSLHR, 63(8), 2680-2694 (2020-08-09)
Purpose The larynx plays a role in swallowing, respiration, and voice production. All three functions change during ontogeny. We investigated ontogenetic shape changes using a mouse model to inform our understanding of how laryngeal form and function are integrated. We
G. W. A. Milne
Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and Properties, 496-496 (2005)
Sakari S Karhula et al.
PloS one, 12(1), e0171075-e0171075 (2017-01-31)
Contrast-enhanced micro-computed tomography (CEμCT) with phosphotungstic acid (PTA) has shown potential for detecting collagen distribution of articular cartilage. However, the selectivity of the PTA staining to articular cartilage constituents remains to be elucidated. The aim of this study was to
Todd A Schoborg
Journal of visualized experiments : JoVE, (163) (2020-09-22)
Biomedical imaging tools permit investigation of molecular mechanisms across spatial scales, from genes to organisms. Drosophila melanogaster, a well-characterized model organism, has benefited from the use of light and electron microscopy to understand gene function at the level of cells
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