Saltar al contenido
Merck
Todas las fotos(3)

Documentos clave

Ver Toda la documentación

P6148

Sigma-Aldrich

Paraformaldehyde

reagent grade, crystalline

Sinónimos:

Polyoxymethylene

Iniciar sesiónpara Ver la Fijación de precios por contrato y de la organización
Todas las fotos(3)

About This Item

Fórmula lineal:
HO(CH2O)nH
Número de CAS:
30525-89-4
Peso molecular:
30.03 (as monomer)
MDL number:
MFCD00133991
UNSPSC Code:
12352114
PubChem Substance ID:
24898648
NACRES:
NA.25
grade:
reagent grade
vapor pressure:
<1.45 mmHg ( 25 °C)
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grade

reagent grade

Quality Level

200

vapor density

1.03 (vs air)

vapor pressure

<1.45 mmHg ( 25 °C)

form

crystalline

autoignition temp.

572 °F

expl. lim.

73 %

mp

120-170 °C (lit.)

density

0.88 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

[O-]#[C+H2]

InChI

1S/CH2O/c1-2/h1H2

InChI key

WSFSSNUMVMOOMR-UHFFFAOYSA-N

¿Está buscando productos similares? Visita Guía de comparación de productos

General description

Paraformaldehyde is a cross-linking fixative. It is changed to formaldehyde by heating and by adding small amount of sodium hydroxide.[1][2]

Application

Paraformaldehyde is recommended for use in the preparation of formalin fixatives for tissues or cells when the samples are to be used in florescence studies.
Paraformaldehyde has been used for fixing of cells and tissue sections during staining procedures.[3][4][5]

Other Notes

2024 CiteAb Award Winner for Supplier Succeeding in Parkinson′s Research

related product

Referencia del producto
Descripción
Precios

08168

Timestrip Plus™ 8 °C

signalword

Danger

Hazard Classifications

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

target_organs

Respiratory system

Storage Class

4.1B - Flammable solid hazardous materials

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

Elija entre una de las versiones más recientes:

Certificados de análisis (COA)

Lot/Batch Number
MKCV5332
MKCW2404
MKCT2591
MKCV1963
MKCT1053

¿No ve la versión correcta?

Si necesita una versión concreta, puede buscar un certificado específico por el número de lote.

Busque por un COA

¿Ya tiene este producto?

Encuentre la documentación para los productos que ha comprado recientemente en la Biblioteca de documentos.

Visite la Librería de documentos

The development of 3-D, in vitro, endothelial culture models for the study of coronary artery disease.
Farcas MA et al.
BioMedical Engineering OnLine, 8, 30-30 (2009)
Molecular Plant Biology: A Practical Approach (2002)
Proliferation of bone marrow-derived cells contributes to regeneration after folic acid-induced acute tubular injury.
Fang TC, et al.
Journal of the American Society of Nephrology, 16, 1723-1723 (2005)
Yi-Yuan Huang et al.
PloS one, 7(1), e30638-e30638 (2012-02-01)
Multiple DNA repair pathways are involved in the orderly development of neural systems at distinct stages. The homologous recombination (HR) pathway is required to resolve stalled replication forks and critical for the proliferation of progenitor cells during neural development. BCCIP
M Lango-Chavarría et al.
International journal of oncology, 50(2), 432-440 (2017-01-20)
Breast cancer ranks first in incidence and mortality in working age women. Cancer initiation and progression relies on accumulation of genetic and epigenetic aberrations that alter cellular processes, among them, epithelial to mesenchymal transition (EMT) denotes particularly aggressive neoplasias given
Ver todos los artículos relacionados

Artículos

Fluorescent in situ Hybridization (FISH)

Available Fluorescent in situ hybridization (FISH) procedures, reagents and equipment.

Fluorescent in situ Hybridization (FISH)

Available Fluorescent in situ hybridization (FISH) procedures, reagents and equipment.

Fluorescent in situ Hybridization (FISH)

Available Fluorescent in situ hybridization (FISH) procedures, reagents and equipment.

Fluorescent in situ Hybridization (FISH)

Available Fluorescent in situ hybridization (FISH) procedures, reagents and equipment.

Protocolos

Immunofluorescence Labeling of Cells

Cell staining can be divided into four steps: cell preparation, fixation, application of antibody, and evaluation.

Immunofluorescence Labeling of Cells

Cell staining can be divided into four steps: cell preparation, fixation, application of antibody, and evaluation.

Immunofluorescence Labeling of Cells

Cell staining can be divided into four steps: cell preparation, fixation, application of antibody, and evaluation.

Immunofluorescence Labeling of Cells

Cell staining can be divided into four steps: cell preparation, fixation, application of antibody, and evaluation.

Contenido relacionado

Preparation & Staining of 3D Printed Tissues & Scaffolds

Three-dimensional (3D) printing of biological tissue is rapidly becoming an integral part of tissue engineering.

Preparation & Staining of 3D Printed Tissues & Scaffolds

Three-dimensional (3D) printing of biological tissue is rapidly becoming an integral part of tissue engineering.

Questions

1–8 of 8 Questions  

  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

      Helpful?

  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

      Helpful?

  3. What is the difference between formaldehyde and paraformaldehyde?

    1 answer

    1. Paraformaldehyde is the polymeric form of formaldehyde. It is a solid. Formaldehyde is a gas which when dissolved in water gives a formaldehyde solution. Commercially available formaldehyde solutions usually contain 10-15% methanol, which prevents the formaldehyde from forming the polymeric paraformaldehyde.

      Helpful?

  4. How to prepare solutions of Product P6148, Paraformaldehyde?

    1 answer

    1. Paraformaldehyde does not dissolve but rather can be depolymerized in solution. Depolymerized solutions can be prepared in water with heating to 55-60°C. If necessary, further addition of 1-2 drops of a sodium hydroxide solution may be required. Some protocols suggest that paraformaldehyde should be prepared in buffered solutions such as phosphate buffer or PBS at approximately pH 7.

      Helpful?

  5. 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.

      Helpful?

  6. How stable are Product P6148, Paraformaldehyde, solutions?

    1 answer

    1. Buffered solutions of 2-4% can be stored protected from light for 2-3 weeks at 2-8°C.

      Helpful?

  7. What is the shelf life of Product P6148, Paraformaldehyde?

    1 answer

    1. The shelf life has not been assigned but guarantee of quality is 1 year from the time of receipt for unopened bottles stored at 2-8 °C.  We expect the product to be of good quality for at least 2 years.

      Helpful?

  8. What is the difference between formaldehyde and paraformaldehyde?

    1 answer

    1. Paraformaldehyde is the polymeric form of formaldehyde. Paraformaldehyde is a solid, and formaldehyde is a gas. Formaldehyde solutions consist of formaldehyde gas dissolved in a solvent of some kind.

      Helpful?

Reviews

No rating value

Active Filters

Nuestro equipo de científicos tiene experiencia en todas las áreas de investigación: Ciencias de la vida, Ciencia de los materiales, Síntesis química, Cromatografía, Analítica y muchas otras.

Póngase en contacto con el Servicio técnico