158127

Paraformaldehyde

powder, 95%

• Synonym(s): Polyoxymethylene
• Linear Formula: HO(CH₂O)_nH
• CAS Number: 30525-89-4
• Molecular Weight: 30.03 (as monomer)
• MDL number: MFCD00133991
• UNSPSC Code: 12352100
• PubChem Substance ID: 24849719
• NACRES: NA.21

Properties

• vapor density: 1.03 (vs air)
• Quality Level: 200
• 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

Description

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.

Other Notes

2024 CiteAb Award Winner for Supplier Succeeding in Parkinson′s Research

Safety Information

• Pictograms: GHS02,GHS08,GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H228,H302 + H332,H315,H317,H318,H335,H341,H350
• Precautionary Statements: P210 - P280 - P301 + P312 - P304 + P340 + P312 - P305 + P351 + P338 - P308 + P313
• 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 Code: 4.1B - Flammable solid hazardous materials
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves