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Merck

16005

Sigma-Aldrich

Paraformaldehyde

meets analytical specification of DAC, 95.0-100.5%

Sinónimos:

Polyoxymethylene

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About This Item

Fórmula lineal:
HO(CH2O)nH
Número de CAS:
Peso molecular:
30.03 (as monomer)
Número MDL:
Código UNSPSC:
12352100
ID de la sustancia en PubChem:
NACRES:
NA.22

densidad de vapor

1.03 (vs air)

presión de vapor

<1.45 mmHg ( 25 °C)

Análisis

95.0-100.5%

formulario

pellets

temp. de autoignición

572 °F

calidad

meets analytical specification of DAC

lim. expl.

73 %

técnicas

NMR: suitable

impurezas

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

mp

120-170 °C (lit.)

solubilidad

water: insoluble

densidad

0.88 g/mL at 25 °C (lit.)

idoneidad

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

temp. de almacenamiento

2-8°C

InChI

1S/CH2O/c1-2/h1H2

Clave InChI

WSFSSNUMVMOOMR-UHFFFAOYSA-N

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Descripción general

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

Aplicación

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.

Palabra de señalización

Danger

Clasificaciones de peligro

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

Órganos de actuación

Respiratory system

Código de clase de almacenamiento

4.1B - Flammable solid hazardous materials

Clase de riesgo para el agua (WGK)

WGK 2

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

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


Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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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
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
Yangwu Chen et al.
Materials science & engineering. C, Materials for biological applications, 103, 109711-109711 (2019-07-28)
Tendon calcification is a common but intractable problem leading to pain and activity limitation when injury or tendinopathy progresses into the late stage. This is because tendon stem/progenitor cells (TSPCs) can undergo aberrant osteogenic differentiation under inflammatory conditions. This study
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

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