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16005

Sigma-Aldrich

Paraformaldehyd

meets analytical specification of DAC, 95.0-100.5%

Synonym(e):

Polyoxymethylen

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About This Item

Lineare Formel:
HO(CH2O)nH
CAS-Nummer:
30525-89-4
Molekulargewicht:
30.03 (as monomer)
MDL-Nummer:
MFCD00133991
UNSPSC-Code:
12352100
PubChem Substanz-ID:
24849849
NACRES:
NA.22

Dampfdichte

1.03 (vs air)

Dampfdruck

<1.45 mmHg ( 25 °C)

Assay

95.0-100.5%

Form

pellets

Selbstzündungstemp.

572 °F

Qualität

meets analytical specification of DAC

Expl.-Gr.

73 %

Methode(n)

NMR: suitable

Verunreinigungen

residual solvents, in accordance
<0.1% sulfated ash
10 ppm heavy metals (as Pb)

mp (Schmelzpunkt)

120-170 °C (lit.)

Löslichkeit

water: insoluble

Dichte

0.88 g/mL at 25 °C (lit.)

Eignung

in accordance for appearance of solution
suitable for acidity or alkalinity (complying)

Lagertemp.

2-8°C

InChI

1S/CH2O/c1-2/h1H2

InChIKey

WSFSSNUMVMOOMR-UHFFFAOYSA-N

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Allgemeine Beschreibung

Buffered picric acid-paraformaldehyde fixative is suitable for use in electron microscopy and light-microscopic immunocytochemistry.

Anwendung

Paraformaldehyde was used in the preparation of azomethine ylide, required for the synthesis of amine-modifying single-walled carbon nanotubes. It was also used in the preparation of α-methylenechromanes, α-methylenequinoline and ortho-quinone methides.

Signalwort

Danger

Gefahreneinstufungen

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Carc. 1B - Eye Dam. 1 - Flam. Sol. 2 - Muta. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

Zielorgane

Respiratory system

Lagerklassenschlüssel

4.1B - Flammable solid hazardous materials

WGK

WGK 2

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

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

Analysenzertifikate (COA)

Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.

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P Somogyi et al.
Neuroscience, 7(7), 1779-1783 (1982-07-01)
The buffered picric acid paraformaldehyde fixative originally recommended for electronmicroscopy and which has since been used occasionally for light-microscopic immunocytochemistry, has been supplemented with glutaraldehyde and used as primary fixative for the perfusion of rat brains. In the basal ganglia
J Justin Mulvey et al.
International journal of nanomedicine, 9, 4245-4255 (2014-09-18)
We aimed to create a more robust and more accessible standard for amine-modifying single-walled carbon nanotubes (SWCNTs). A 1,3-cycloaddition was developed using an azomethine ylide, generated by reacting paraformaldehyde and a side-chain-Boc (tert-Butyloxycarbonyl)-protected, lysine-derived alpha-amino acid, H-Lys(Boc)-OH, with purified SWCNT
José C J M D S Menezes et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 20(42), 13644-13655 (2014-08-30)
In view of increasing demands for efficient photosensitizers for photodynamic therapy (PDT), we herein report the synthesis and photophysical characterizations of new chlorin e6 trimethyl ester and protoporphyrin IX dimethyl ester dyads as free bases and Zn(II) complexes. The synthesis of these
Ting Yao et al.
FEBS open bio, 6(7), 707-719 (2016-07-12)
Decorin (DCN) is a major member of the small leucine-rich proteoglycan (SLRP) family that is critically involved in tumorigenesis and the development of metastasis of cancers, including glioma. Overexpression of DCN was indicated to suppress glioma cell growth. However, the
Lili Wang et al.
Cytometry. Part A : the journal of the International Society for Analytical Cytology, 81(7), 567-575 (2012-04-28)
To transform the linear fluorescence intensity scale obtained with fluorescent microspheres to an antibody bound per cell (ABC) scale, a biological cell reference material is needed. Optimally, this material should have a reproducible and tight ABC value for the expression
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