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16005

Sigma-Aldrich

Paraformaldehyde

meets analytical specification of DAC, 95.0-100.5%

Sinónimos:

Polyoxymethylene

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1 KG
MXP 1,309.00

MXP 1,309.00

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1 KG
MXP 1,309.00

About This Item

Fórmula lineal:
HO(CH2O)nH
Número de CAS:
30525-89-4
Peso molecular:
30.03 (as monomer)
Número MDL:
MFCD00133991
Código UNSPSC:
12352100
ID de la sustancia en PubChem:
24849849
NACRES:
NA.22

MXP 1,309.00

Disponible para envío el15 de abril de 2025Detalles

Solicitar un pedido a granel

densidad de vapor

1.03 (vs air)

Nivel de calidad

200

presión de vapor

<1.45 mmHg ( 25 °C)

Ensayo

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

cadena SMILES

[O-]#[C+H2]

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.[1]

Aplicación

Paraformaldehyde was used in the preparation of azomethine ylide, required for the synthesis of amine-modifying single-walled carbon nanotubes.[2] It was also used in the preparation of α-methylenechromanes, α-methylenequinoline and ortho-quinone methides.[3]

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

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Certificados de análisis (COA)

Lot/Batch Number
SDBB2181
STBL3782
STBL4527
STBL2820
STBL1058

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Formaldehído solution contains 10-15% methanol as stabilizer, 37&#160;wt. % in H2O

SAFC

F1635

Formaldehído solution

1,3,5-Trioxane &#8805;99%

Sigma-Aldrich

T81108

1,3,5-Trioxane

Glutaraldehyde solution Grade I, 25% in H2O, specially purified for use as an electron microscopy fixative

Sigma-Aldrich

G5882

Glutaraldehyde solution

Formaldehído solution meets analytical specification of USP, &#8805;34.5&#160;wt. %

Sigma-Aldrich

15512

Formaldehído solution

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
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
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
Lingling Chen et al.
Scientific reports, 7(1), 12218-12218 (2017-09-25)
Optical clearing methods can facilitate deep optical imaging in biological tissue by reducing light scattering and this has enabled accurate three-dimensional signal visualization and quantification of complex biological structures. Unfortunately, existing optical clearing approaches present a compromise between maximizing clearing
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Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  3. What is the Department of Transportation shipping information for this product?

    1 answer

    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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