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16005

Paraformaldehyde

Name: Paraformaldehyde
Brand: ALDRICH

meets analytical specification of DAC, 95.0-100.5%

Sinónimos:

Polyoxymethylene

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Fórmula lineal:

HO(CH₂O)_nH

Número CAS:

30525-89-4

Peso molecular:

30.03 (as monomer)

UNSPSC Code:

12352100

PubChem Substance ID:

24849849

NACRES:

NA.22

MDL number:

MFCD00133991

Assay:

95.0-100.5%

Technique(s):

NMR: suitable

Vapor pressure:

<1.45 mmHg ( 25 °C)

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Propiedades

vapor density

1.03 (vs air)

Quality Segment

200

vapor pressure

<1.45 mmHg ( 25 °C)

assay

95.0-100.5%

form

powder

autoignition temp.

572 °F

quality

meets analytical specification of DAC

expl. lim.

73 %

technique(s)

NMR: suitable

impurities

residual solvents, in accordance, <0.1% sulfated ash, 10 ppm heavy metals (as Pb)

mp

120-170 °C (lit.)

solubility

water: insoluble

density

0.88 g/mL at 25 °C (lit.)

suitability

in accordance for appearance of solution, suitable for acidity or alkalinity (complying)

storage temp.

2-8°C

SMILES string

[O-]#[C+H2]

InChI

1S/CH2O/c1-2/h1H2

InChI key

WSFSSNUMVMOOMR-UHFFFAOYSA-N

Descripción

General description

Buffered picric acid-paraformaldehyde fixative is suitable for use in electron microscopy and light-microscopic immunocytochemistry.

Application

Paraformaldehyde was used in the preparation of azomethine ylide, required for the synthesis of amine-modifying single-walled carbon nanotubes. It was also used in the preparation of α-methylenechromanes, α-methylenequinoline and ortho-quinone methides.

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pictograms

GHS02,GHS08,GHS05,GHS07

signalword

Danger

hcodes

H228,H302 + H332,H315,H317,H318,H335,H341,H350

pcodes

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

Clase de almacenamiento

4.1B - Flammable solid hazardous materials

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c