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A11313 30525-89-4 Paraformaldehyde, 97% Polyoxymethylene Alfa Aesar


Certificate of Analysis

Paraformaldehyde, 97%

CAS: 30525-89-4 MDL: MFCD00133991  EINECS: 200-001-8
UN#:UN2213Hazard Class:4.1Packing Group:III
Alternate Name: Polyoxymethylene


Pricing and Availability

Size ($) Price Your Price Quantity Options Availability
100g 21.80 Check Availability Add to Favorites Enter qty and click checkbox
500g 22.90 Check Availability Add to Favorites Enter qty and click checkbox
2500g 65.40 Check Availability Add to Favorites Enter qty and click checkbox
10000g 206.00 Check Availability Add to Favorites Enter qty and click checkbox

Chemical Properties

Formula: (CH2O)n  Flash point: 71°(159°F)
Melting point: 120-170° dec. Density: 1.30

Literature References

Formaldehyde monomer, generated by thermolysis, has been used for the ɑ-hydroxymethylation of dilithiated carboxylic acids. Dehydration of the products affords ɑ-alkyl acrylic acids: J. Org. Chem., 37, 1256 (1972). Monomeric formaldehyde can also be prepared as a THF solution by dehydration with p-Toluenesulfonic anhydride, L00160, and co-distillation of the monomer with the solvent: Synlett, 704 (1990). The use of anhydrous molecular formaldehyde for hydroxymethylation reactions has been discussed: Synlett, 227 (1990).

For use in the preparation of di-t-butyl methylenemalonate, see Di-tert-butyl­ malonate, A12774. For the direct ɑ-methylenation of ketones, see N-Methyl­anilinium trifluoroacetate, A17781.

For use in preparation of Mannich bases, see: Org. Synth. Coll., 3, 305 (1955); 4, 281 (1963). For reviews, see: Org. React., 1, 303 (1942); Synthesis, 703 (1973); Tetrahedron, 46, 1791 (1990).

In the presence of HCl, aromatics undergo chloromethylation. For reviews, see: Org. React., 1, 63 (1942); Russ. Chem. Rev., 46, 891 (1977). Caution! carcinogenic bis(chloromethyl) ether is formed in these reactions. In combination with Hydrobromic acid, A14475, the bromomethylation of aromatics has been effected: J. Org. Chem., 58, 1262 (1993). The same combination also N-bromomethylates phthalimide and other imides: Synlett, 933 (1994).

Reaction with dialkyl phosphites gives hydroxymethyl phosphonates, which, after O-protection, undergo the Horner-Wadsworth-Emmons reaction to give enol ethers. See, e.g.: Org. Synth. Coll., 7, 160 (1990).

See also Formaldehyde, A16163 and 1,3,5-Trioxane, A15639 .

Other References

Merck: 14,7025
Beilstein: 102769
UN#: UN2213
Harmonized Tariff Code: 2912.60

GHS Hazard and Precautionary Statements

Hazard Statements : H314-H318-H228-H351-H302-H332-H317

Causes severe skin burns and eye damage. Causes serious eye damage. Flammable solid. Suspected of causing cancer. Harmful if swallowed. Harmful if inhaled. May cause an allergic skin reaction.

Precautionary Statements : P210-P260-P303+P361+P353-P305+P351+P338-P405-P501A

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Do not breathe dust/fume/gas/mist/vapours/spray. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

FlammableCorrosiveHarmful or IrritantHealth Hazard

Risk & Safety

Risk Phrases: 11-20/22-34-40-43
Flammable. Harmful by inhalation and if swallowed. Causes burns. Possible risk of irreversible effects. May cause sensitisation by skin contact.
Safety Phrases: 9-20-26-36/37/39-45-60
Keep container in a well ventilated place. When using do not eat or drink. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). This material and/or its container must be disposed of as hazardous waste.
Harmful Corrosive Highly Flammable
RTECS: RV0540000