441244
Paraformaldehyde
prilled, 95%
동의어(들):
Polyoxymethylene
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제품정보 (DICE 배송 시 비용 별도)
Linear Formula:
HO(CH2O)nH
CAS 번호:
Molecular Weight:
30.03 (as monomer)
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22
MDL number:
Assay:
95%
Form:
prilled
vapor density
1.03 (vs air)
Quality Level
vapor pressure
<1.45 mmHg ( 25 °C)
assay
95%
form
prilled
autoignition temp.
572 °F
expl. lim.
73 %
mp
120-170 °C (lit.)
transition temp
sublimation point 150 °C
solubility
alcohol and cold water: slightly soluble, ethers, hydrocarbons and carbon tetrachloride: insoluble
density
0.88 g/mL at 25 °C (lit.)
SMILES string
[O-]#[C+H2]
InChI
1S/CH2O/c1-2/h1H2
InChI key
WSFSSNUMVMOOMR-UHFFFAOYSA-N
General description
Paraformaldehyde, a polymerization product of formaldehyde, is used in the polycondensation reaction for the synthesis of thermoset polymers.
Paraformaldehyde is also referred as polyoxymethylene. It participates in the regioselective reductive coupling reactions of dienes, alkynes and allenes in the presence of ruthenium catalyst. It also participates in the synthesis of esters, via alkoxycarbonylation of alkenes.
Paraformaldehyde is also referred as polyoxymethylene. It participates in the regioselective reductive coupling reactions of dienes, alkynes and allenes in the presence of ruthenium catalyst. It also participates in the synthesis of esters, via alkoxycarbonylation of alkenes.
Application
Formaldehyde source to prepare phenol-, urea-, furfuryl alcohol-, resorcinol- and melamine-formaldehyde polymers for use in coatings, wood products, textiles and foundry resins.
Paraformaldehyde may be used in the preparation of azomethine ylide, α-methylenechromanes, α-methylenequinoline and ortho-quinone methides.
Features and Benefits
Source of methanol-free formaldehyde.
Decomposes in hot water to give formaldehyde.
Decomposes in hot water to give formaldehyde.
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
저장 등급
4.1B - Flammable solid hazardous materials
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Brannon Sam et al.
Angewandte Chemie (International ed. in English), 54(11), 3267-3274 (2014-11-29)
Ruthenium-catalyzed reductive couplings of paraformaldehyde with dienes, alkynes, and allenes provide access to products of hydrohydroxymethylation that cannot be formed selectively under the conditions of hydroformylation. In certain cases, the regioselectivity of the CC coupling can be inverted by using
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
Ruthenium-Catalyzed Alkoxycarbonylation of Alkenes with Paraformaldehyde as a Carbon Monoxide Substitute.
Liu Q, et al.
ChemCatChem, 6(10), 2805-2809 (2014)