Formaldehyde

CAS No. 50-00-0

Formula: CH2O
Basic Info

Formaldehyde is used in various organic synthesis and reactions. It is used in the textile industry in the area of crosslinking molecules to vary the properties of fabrics. In the food industry it is used to reinforce and improve packaging of meats and produce. It can help improve the water resistance of biodegradable collagen films.

Formula
CH2O
Molecular Weight
30.026
Exact Mass
30.0106
LogP
0.451
PSA
17.07
Synonyms

Formalin

Morbicid

Formic aldehyde

Methanal

Oxymethylene

Formaldehyde

Formol

Oxomethane

fannoform

formalith

Methylene glycol

Oxomethylene

HCHO

lysoform

Methylene oxide

Methyl aldehyde

superlysoform

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Properties
Appearance & Physical State
Colorless gas
Density
0.8153 g/cm3 (−20 °C)
Boiling Point
-19 °C
Melting Point
-92 °C
Flash Point
50 °C (122 °F) for 37 % formaldehyde (15 % methanol)(closed cup); 85 °C (185 °F) for 37 % formaldehyde (methanol free)(closed cup)
Refractive Index
7 g/L (25 ºC)
Water Solubility
soluble, > 100 g/100 ml(20 °C)
Stability
Stable. Combustible. Incompatible with strong oxidizing agents.
Storage Condition
2-8ºC
Vapor Density
300ºC
Vapor Pressure
>1 atm (20 °C)
Safety Info
RTECS
LP8925000
Safety Statements
S26;S36/37/39;S45;S51;S53;S60
WGK Germany
2
Risk Statements
R23/24/25; R34; R43; R45
HS Code
2912110000
RIDADR
UN 2209 8 / PGIII
Hazard Class
8
Packing Group
III
Caution Statement
P201; P260; P280; P301 + P310 + P330; P303 + P361 + P353; P304 + P340 + P310; P305 + P351 + P338; P308 + P311
Hazard Codes
Spectrum
NMR Spectrum 1H NMR : parameter in TMS
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IR Spectrum GAS (HEATING PARAFORMALDEHYDE; CONCENTRATION UNKNOWN)
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Analysis Methods
Kovats' RI, non-polar column, isothermal
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Column Shape
Packed
Active Phase(℃)
Porapack Q
Retention index
284.
Temperature Control
200.
Method
isothermal
Comments
N2
Reference
Goebel, K.-J.Gaschromatographische Identifizierung Niedrig Siedender Substanzen Mittels Retentionsindices und RechnerhilfeJ. Chromatogr.1982, 235, 1, 119-127.
Kovats' RI, non-polar column, isothermal
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Column Shape
Packed
Active Phase(℃)
SE-30
Retention index
229.
Temperature Control
150.
Method
isothermal
Comments
Celatom AW silanized; Column length: 3.7 m
Reference
Haken, J.K.Nguyen, A.Wainwright, M.S.Application of linear extrathermodynamic relationships to alcohols, aldehydes, ketones, amd ethoxy alcoholsJ. Chromatogr.1979, 179, 1, 75-85.
Kovats' RI, non-polar column, isothermal
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Column Shape
Packed
Active Phase(℃)
Apiezon L
Retention index
249.
Temperature Control
160.
Method
isothermal
Comments
Celite 545
Reference
Bogoslovsky, Yu.N.Anvaer, B.I.Vigdergauz, M.S.Chromatographic constants in gas chromatography (in Russian)Standards Publ. House, Moscow, 1978, 192.
Normal alkane RI, non-polar column, temperature ramp
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Column Shape
Capillary
Active Phase(℃)
OV-101
Retention index
273.
Temperature Control
Method
temperature ramp
Comments
25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; T<sub>start</sub>: 50. C; T<sub>end</sub>: 250. C
Reference
Zenkevich, I.G.Experimentally measured retention indices.2005.
Normal alkane RI, non-polar column, custom temperature program
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Column Shape
Capillary
Active Phase(℃)
SPB-1
Retention index
247.
Temperature Control
Method
custom temperature program
Comments
60. m/0.53 mm/5. μm, He; Program: 40C(6min) =&gt; 5C/min =&gt; 80C =&gt; 10C/min =&gt; 200C
Reference
Flanagan, R.J.Streete, P.J.Ramsey, J.D.Volatile Substance AbuseUNODC Technical Series, No 5, United Nations, Office on Drugs and Crime, Vienna International Centre, PO Box 500, A-1400 Vienna, Austria, 1997, 56, retrieved from http://www.odccp.org/pdf/technica
Toxicity
SKIN/EYE IRRITATION DATA
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Type of Test
Standard Draize test
Exposure Route
Administration onto the skin
Species Observed
Human
Dose/Duration
150 ug/3D (Intermittent)
Toxic Effects
--
Reference
Cutaneous Toxicity, Proceedings of the 3rd Conference, 1976, Drill, V.A., and P. Lazar, eds., New York, Academic Press, Inc. 1977 Volume(issue)/page/year: -,127,1977
SKIN/EYE IRRITATION DATA
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Type of Test
Standard Draize test
Exposure Route
Administration into the eye
Species Observed
Human
Dose/Duration
4 ppm/5M
Toxic Effects
--
Reference
International Journal of Air and Water Pollution. (London, UK) V.4(1-4), 1961. For publisher information, see ATENBP. Volume(issue)/page/year: 4,79,1961
SKIN/EYE IRRITATION DATA
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Type of Test
Non-standard exposure
Exposure Route
Administration into the eye
Species Observed
Human
Dose/Duration
1 ppm/6M
Toxic Effects
--
Reference
American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 44,463,1983
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