441244

Paraformaldehyde

prilled, 95%

• 동의어(들): Polyoxymethylene
• Linear Formula: HO(CH₂O)_nH
• CAS Number: 30525-89-4
• Molecular Weight: 30.03 (as monomer)
• MDL number: MFCD00133991
• UNSPSC 코드: 12352100
• PubChem Substance ID: 24867646
• NACRES: NA.22

속성

• vapor density: 1.03 (vs air)
• Quality Level: 200
• vapor pressure: <1.45 mmHg ( 25 °C)
• 분석: 95%
• 양식: prilled
• autoignition temp.: 572 °F
• expl. lim.: 73 %
• mp: 120-170 °C (lit.)
• 전이 온도: 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

설명

일반 설명

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.

애플리케이션

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.

특징 및 장점

Source of methanol-free formaldehyde.
Decomposes in hot water to give formaldehyde.

안전성 정보

• 픽토그램: GHS02,GHS08,GHS05,GHS07
• 신호어: Danger
• 유해 및 위험 성명서: H228,H302 + H332,H315,H317,H318,H335,H341,H350
• 예방조치 성명서: 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
• 표적 기관: Respiratory system
• Storage Class Code: 4.1B - Flammable solid hazardous materials
• WGK: WGK 2
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• 개인 보호 장비: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges