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16005

Sigma-Aldrich

Paraformaldehyde

meets analytical specification of DAC, 95.0-100.5%

Sinonimo/i:

Polyoxymethylene

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1 KG
49,90 €
25 KG
216,00 €
6 X 1 KG
312,00 €

49,90 €

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Cambia visualizzazione
1 KG
49,90 €
25 KG
216,00 €
6 X 1 KG
312,00 €

About This Item

Formula condensata:
HO(CH2O)nH
Numero CAS:
30525-89-4
Peso molecolare:
30.03 (as monomer)
Numero MDL:
MFCD00133991
Codice UNSPSC:
12352100
ID PubChem:
24849849
NACRES:
NA.22

49,90 €

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Densità del vapore

1.03 (vs air)

Tensione di vapore

<1.45 mmHg ( 25 °C)

Saggio

95.0-100.5%

Stato

pellets

Temp. autoaccensione

572 °F

Qualità

meets analytical specification of DAC

Limite di esplosione

73 %

tecniche

NMR: suitable

Impurezze

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

Punto di fusione

120-170 °C (lit.)

Solubilità

water: insoluble

Densità

0.88 g/mL at 25 °C (lit.)

Compatibilità

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

Temperatura di conservazione

2-8°C

Stringa SMILE

[O-]#[C+H2]

InChI

1S/CH2O/c1-2/h1H2
WSFSSNUMVMOOMR-UHFFFAOYSA-N

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Descrizione generale

Buffered picric acid-paraformaldehyde fixative is suitable for use in electron microscopy and light-microscopic immunocytochemistry.[1]

Applicazioni

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]

Avvertenze

Danger

Classi di pericolo

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

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

4.1B - Flammable solid hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

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

Elenchi normativi

Forniamo informazioni su eventuali restrizioni prevalentemente per i prodotti chimici. Per altre tipologie di prodotto siamo in grado di fornire soltanto informazioni limitate. Nessuna segnalazione significa che nessuno dei componenti è citato in un elenco. È dovere dell’utilizzatore assicurarsi che il prodotto venga impiegato in maniera sicura e a norme di legge.

EU REACH Annex XVII (Restriction List)

CAS No.

Scegli una delle versioni più recenti:

Certificati d'analisi (COA)

Lot/Batch Number
SDBB2181
STBL3782
STBL4527
STBL2820
STBL1058

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Formaldeide 36.5-38% in H2O

Sigma-Aldrich

F8775

Formaldeide

Formaldeide ACS reagent, 37&#160;wt. % in H2O, contains 10-15% Methanol as stabilizer (to prevent polymerization)

Sigma-Aldrich

252549

Formaldeide

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

SAFC

F1635

Formaldeide

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

Sigma-Aldrich

T81108

1,3,5-Trioxane

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

Sigma-Aldrich

G5882

Glutaraldeide

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

Sigma-Aldrich

15512

Formaldeide

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
Johanna Zemva et al.
Redox biology, 13, 674-686 (2017-08-22)
Energy production is inevitably linked to the generation of toxic metabolites, such as reactive oxygen and carbonyl species, known as major contributors to ageing and degenerative diseases. It remains unclear how cells can adapt to elevated energy flux accompanied by
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Domande

1–3 di 3 domande  

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

    1 risposta

    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

      Utile?

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

    1 risposta

    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

      Utile?

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

    1 risposta

    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.

      Utile?

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