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Paraformaldehyde structure
Chemical Name:
Flo-mor;PARAFORM;aldacide;Formagen;Formagene;Granuform;POLYACETAL;30525-89-4;ACETAL RESIN;POLY(TRIOXANE)
Molecular Formula:
Formula Weight:
MOL File:

Paraformaldehyde Properties

Melting point:
175 °C
Boiling point:
107.25°C (rough estimate)
0.88 g/mL at 25 °C(lit.)
vapor density 
1.03 (vs air)
vapor pressure 
<1.45 mm Hg ( 25 °C)
refractive index 
1.4540 (estimate)
Flash point:
158 °F
storage temp. 
chlorophenol above 70°C: soluble
White to off-white
5.5 (H2O, 20℃)(saturated solution)
explosive limit
Water Solubility 
sparingly soluble
Stable. Incompatible with strong acids, organic acids, strong oxidizing agents, oxides, alkalies, strong bases, amines. Combustible. Dust may form an explosive mixture with air. Liberates poisonous gases on combustion.
EPA Substance Registry System
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H319-H334-H341-H370-H412-H228-H302+H332-H315-H317-H318-H335-H351-H303-H302-H314-H332
Precautionary statements  P405-P501a-P260h-P303+P361+P353-P210-P261-P280-P305+P351+P338-P301+P312+P330-P305+P351+P338+P310-P370+P378-P201-P202-P240-P241-P260-P264-P270-P271-P272-P273-P284-P302+P352+P333+P313+P363-P304+P340+P312-P305+P351+P338+P337+P313-P307+P311-P403+P233
Hazard Codes  Xn,F
Risk Statements  31-43-40-36/37/38-20/22-41-37/38-42/43-20/21/22-11
Safety Statements  36-45-36/37/39-26-24-22
RIDADR  UN 2213 4.1/PG 3
WGK Germany  3
RTECS  RV0540000
Autoignition Temperature 572 °F
HazardClass  4.1
PackingGroup  III
HS Code  38084090
Toxicity LD50 orally in Rabbit: 592 mg/kg

NFPA 704

Diamond Hazard Value Description
3 0
Health   3 Short exposure could cause serious temporary or moderate residual injury (e.g. liquid hydrogen, sulfuric acid, calcium hypochlorite, hexafluorosilicic acid)
Flammability   1 Materials that require considerable preheating, under all ambient temperature conditions, before ignition and combustion can occur. Includes some finely divided suspended solids that do not require heating before ignition can occur. Flash point at or above 93.3 °C (200 °F). (e.g. mineral oil, ammonia)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)

(NFPA, 2010)

Paraformaldehyde price More Price(19)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 158127 Paraformaldehyde powder, 95% 30525-89-4 5g $24.2 2018-11-13 Buy
Sigma-Aldrich 158127 Paraformaldehyde powder, 95% 30525-89-4 3kg $231 2018-11-13 Buy
TCI Chemical P0018 Paraformaldehyde >90.0%(T) 30525-89-4 25g $17 2018-11-22 Buy
TCI Chemical P0018 Paraformaldehyde >90.0%(T) 30525-89-4 500g $23 2018-11-22 Buy
Alfa Aesar 043368 Paraformaldehyde, 16% w/v aq. soln., methanol free 30525-89-4 *2x10ml $30.8 2018-11-16 Buy

Paraformaldehyde Chemical Properties,Uses,Production

Chemical Properties

Paraformaldehyde is a white crystalline solid. Irritating odor. The term “trioxane” applies specifically to this trimer (CH2O)3 but paraformaldehyde is applied both to trioxane and other low polymers or oligomers of formaldehyde.


For disinfecting sickrooms, clothing, linen, and sickroom utensils. Active ingredient of contraceptive creams. Also used as fumigant; in dentistry; in manufacture of synthetic resins and artificial horn or ivory.


ChEBI: A macromolecule composed of repeating methyleneoxy units arising from polymerisation of formaldehyde.

General Description

A white solid with a light pungent odor. A linear polymer of formaldehyde of formula HO(CH2 O)xH where x averages about 30. Soluble in water when x is less than 12; higher polymers are not immediately soluble. Slow dissolution in water proceeds by means of hydrolysis to give fragments of lower x. Flammable, although may take some effort to ignite. Flash point 158°F. Used in fungicides, bactericides, and in the manufacture of adhesives. A hazard to the environment. Immediate steps should be taken to limit spread to the environment.

Air & Water Reactions

Flammable. Forms aqueous solution of formaldehyde, often quite slowly.

Reactivity Profile

Paraformaldehyde may react violently with strong oxidizing agents (hydrogen peroxide, performic acid, perchloric acid in the presence of aniline, potassium permanganate, nitromethane). May react with bases (sodium hydroxide, potassium hydroxide, ammonia), and with nitrogen dioxide (explosive reaction around 180°C). Reacts with hydrochloric acid to form highly toxic bis(chloromethyl) ether. Polymerization reaction with phenol may develop sudden destructive pressure [Bretherick, 5th ed., 1995, p.168]. May generate flammable and/or toxic gases in combination with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Generates toxic formaldehyde gas when heated. Can react with air to give first peroxo acids, and ultimately formic acid. These reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). Incompatible with liquid oxygen.

Health Hazard

Vapor or dust irritates eyes, mucous membranes, and skin; may cause dermatitis. Ingestion of solid or of a solution in water irritates mouth, throat, and stomach and may cause death.

Fire Hazard

Behavior in Fire: Changes to formaldehyde gas, which is highly flammable.

Safety Profile

Moderately toxic by ingestion. A severe eye and skin irritant. Mutation data reported. Flammable when exposed to heat or flame; can react with oxidzing materials. To fight fire, use alcohol foam, COr, dry chemical. Incompatible with liquid oxygen. Dangerous; when heated to decomposition it emits toxic formaldehyde gas. See also FORMALDEHYDE.

Potential Exposure

Paraformaldehyde is used in polyacetal resin manufacture; as a food additive; and as an odorless fuel.


UN2213 Paraformaldehyde, Hazard Class: 4.1; Labels: 4.1-Flammable solid.


Paraformaldehyde dust forms an explosive mixture with air. Decomposes on contact with oxidizers, strong acids; acid fumes; and bases; with elevated temperatures, forming formaldehyde. May explode when heated. May explode on impact if peroxide contamination develops. Mixtures with hydrogen peroxide or liquid oxygen are explosives sensitive to heat, shock, or contact with lead.

Waste Disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

Paraformaldehyde Preparation Products And Raw materials

Raw materials

Preparation Products

Paraformaldehyde Suppliers

Global( 314)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Shenzhen Sendi Biotechnology Co.Ltd.
0755-23311925 18102838259
0755-23311925 CHINA 3194 55
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21707 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20672 55
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555 CHINA 1365 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32447 55
+86 21 5161 9050/ 5187 7795
+86 21 5161 9052/ 5187 7796 CHINA 24191 60
Hebei Chisure Biotechnology Co., Ltd.
0311 66567340 CHINA 1017 58
Hebei Ruishun Trade Co.,LTD
17052563120 CHINA 302 58
Hebei Huanhao Biotechnology Co., Ltd.
86-0311-83975816 whatsapp +8618034554576
86-0311-83975816 CHINA 699 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 23980 58

View Lastest Price from Paraformaldehyde manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-04-02 Paraformaldehyde Manufacturer; In stock GMP Factory
US $1.00 / KG 1KG High quality manufacturer TOP 3 largest production factory in China Chemwill Asia Co.,Ltd.
2019-07-03 Best Price paraformaldehyde with high quality
US $10.00 / KG 1KG 99% 10 mt Hebei Guanlang Biotechnology Co., Ltd.
2018-10-29 Paraformaldehyde CAS NO.30525-89-4
US $1.00 / G 100G 99.9% 50000 tons Hebei Ruishun Trade Co.,Ltd

Paraformaldehyde Spectrum

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