158127
Paraformaldehyde
95%, powder
Synonym(s):
Polyoxymethylene
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About This Item
Linear Formula:
HO(CH2O)nH
CAS Number:
Molecular Weight:
30.03 (as monomer)
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.21
MDL number:
Assay:
95%
Form:
powder
Product Name
Paraformaldehyde, powder, 95%
vapor density
1.03 (vs air)
Quality Segment
vapor pressure
<1.45 mmHg ( 25 °C)
assay
95%
form
powder
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
General description
Paraformaldehyde is also referred as polyoxymethylene. It participates as an external CO source in the synthesis of aromatic aldehydes and esters.
Application
Paraformaldehyde can be used as a:
- Methylene building block in the Mannich reaction with primary amines and alkynes to synthesize propargyl amines.
- Hydroxymethylation reagent to synthesize homoallylic alcohols by reacting with 1,1-disubstituted allenes.
- Formylation reagent in the Ir-catalyzed N-formylation of amines to synthesize formamides.
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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
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
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