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16005

Sigma-Aldrich

Paraformaldehyde

meets analytical specification of DAC, 95.0-100.5%

Sinônimo(s):

Polyoxymethylene

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About This Item

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

densidade de vapor

1.03 (vs air)

Nível de qualidade

200

pressão de vapor

<1.45 mmHg ( 25 °C)

Ensaio

95.0-100.5%

Formulário

pellets

temperatura de autoignição

572 °F

qualidade

meets analytical specification of DAC

Lim. expl.

73 %

técnica(s)

NMR: suitable

Impurezas

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

pf

120-170 °C (lit.)

solubilidade

water: insoluble

densidade

0.88 g/mL at 25 °C (lit.)

adequação

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

temperatura de armazenamento

2-8°C

cadeia de caracteres SMILES

[O-]#[C+H2]

InChI

1S/CH2O/c1-2/h1H2

chave InChI

WSFSSNUMVMOOMR-UHFFFAOYSA-N

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Descrição geral

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

Aplicação

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.

Palavra indicadora

Danger

Classificações de perigo

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

Órgãos-alvo

Respiratory system

Código de classe de armazenamento

4.1B - Flammable solid hazardous materials

Classe de risco de água (WGK)

WGK 2

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

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

Escolha uma das versões mais recentes:

Certificados de análise (COA)

Lot/Batch Number
STBL1022
STBL1058
STBL0223
STBK9967
STBK7955

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Formaldeído for molecular biology, 36.5-38% in H2O

Sigma-Aldrich

F8775

Formaldeído

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

Sigma-Aldrich

252549

Formaldeído

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

SAFC

F1635

Formaldeído

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

Sigma-Aldrich

T81108

1,3,5-Trioxane

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

Sigma-Aldrich

G5882

Glutaraldeído

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

Sigma-Aldrich

15512

Formaldeído

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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