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30525-89-4 - Paraformaldehyde, 97% - Polyoxymethylene - A11313 - Alfa Aesar

A11313 Paraformaldehyde, 97%

Número CAS
30525-89-4
Nombre Alternativo
Polyoxymethylene

Tamaño Precio ($) Cantidad Disponibilidad
100g 22,00
500g 23,10
2500g 67,70
10000g 208,00
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Paraformaldehyde, 97%

MDL
MFCD00133991
EINECS
200-001-8

Propiedades químicas

Fórmula
(CH2O)n
Punto de fusión
120-170° dec.
Punto de inflamabilidad
71°(159°F)
Densidad
1.30
Solubilidad
Soluble in hot water. Insoluble in water, ether and alcohol.

Aplicaciones

Paraformaldehyde is used as a fumigant, a disinfectant and in the manufacture of synthetic resins like melamine resin, phenol resin and polyacetal resin. It is also used in cell culture. It also serves as a fixative in electron microscopy. It is also used in the preparation of formalin fixatives for tissues or cells.

Notas

Store in cool place. Incompatible with brass, steel, copper, acid anhydrides, strong oxidizing agents and strong reducing agents.

Referencias documentales

Formaldehyde monomer, generated by thermolysis, has been used for the ɑ-hydroxymethylation of dilithiated carboxylic acids. Dehydration of the products affords ɑ-alkyl acrylic acids: J. Org. Chem., 37, 1256 (1972). Monomeric formaldehyde can also be prepared as a THF solution by dehydration with p-Toluenesulfonic anhydride, L00160, and co-distillation of the monomer with the solvent: Synlett, 704 (1990). The use of anhydrous molecular formaldehyde for hydroxymethylation reactions has been discussed: Synlett, 227 (1990).

For use in the preparation of di-t-butyl methylenemalonate, see Di-tert-butyl­ malonate, A12774. For the direct ɑ-methylenation of ketones, see N-Methyl­anilinium trifluoroacetate, A17781.

For use in preparation of Mannich bases, see: Org. Synth. Coll., 3, 305 (1955); 4, 281 (1963). For reviews, see: Org. React., 1, 303 (1942); Synthesis, 703 (1973); Tetrahedron, 46, 1791 (1990).

In the presence of HCl, aromatics undergo chloromethylation. For reviews, see: Org. React., 1, 63 (1942); Russ. Chem. Rev., 46, 891 (1977). Caution! carcinogenic bis(chloromethyl) ether is formed in these reactions. In combination with Hydrobromic acid, A14475, the bromomethylation of aromatics has been effected: J. Org. Chem., 58, 1262 (1993). The same combination also N-bromomethylates phthalimide and other imides: Synlett, 933 (1994).

Reaction with dialkyl phosphites gives hydroxymethyl phosphonates, which, after O-protection, undergo the Horner-Wadsworth-Emmons reaction to give enol ethers. See, e.g.: Org. Synth. Coll., 7, 160 (1990).

See also Formaldehyde, A16163 and 1,3,5-Trioxane, A15639 .

Suenobu, T.; Isaka, Y.; Shibata, S.; Fukuzumi, S. Catalytic hydrogen production from paraformaldehyde and water using an organoiridium complex. Chem. Commun. 2015, 51 (9), 1670-1672.

Fuentes, J. A.; Pittaway, R.; Clarke, M. L. Rapid Asymmetric Transfer Hydroformylation (ATHF) of Disubstituted Alkenes Using Paraformaldehyde as a Syngas Surrogate. Chem. Eur. J. 2015, 21 (30), 10645-10649.

Indicaciones de peligro y de precaución del GHS

Indicaciones de peligro (UE): H228-H302-H332-H314-H318-H317-H351

Flammable solid. Harmful if swallowed. Harmful if inhaled. Causes severe skin burns and eye damage. Causes serious eye damage. May cause an allergic skin reaction. Suspected of causing cancer.

Indicaciones de precaución: P210-P260u-P303+P361+P353-P305+P351+P338-P405-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Otras referencias

Merck
14,7025
Beilstein
102769
Clase de peligro
4.1
Grupo de embalaje
III
Código de tarifa arancelaria unificado
2912.60
TSCA
Yes
RTECS
RV0540000

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