252549
Sigma-Aldrich

Formaldehyde solution

ACS reagent, 37 wt. % in H₂O

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Synonym

Formalin

Molecular Formula

HCHO

Molecular Weight

30.03

CAS Number

50-00-0

Beilstein Registry Number

1209228

MDL number

MFCD00003274

PubChem Substance ID

24855218

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Descriptions

Packaging

25, 500, 6×500 mL in glass btl

4 L in glass btl

Properties

grade

ACS reagent

vapor density

1.03 (vs air)

vapor pressure

52 mmHg ( 37 °C)

assay

36.5-38.0%

autoignition temp.

572 °F

contains

10-15% Methanol as inhibitor (to prevent polymerization)

concentration

37 wt. % in H₂O

total impurities

≤0.006 meq/g Titr. acid

ign. residue

≤0.005%

color

≤10(APHA)

refractive index

n20/D 1.3765

density

1.09 g/mL at 25 °C(lit.)

anion traces

chloride (Cl^-): ≤5 ppm

sulfate (SO₄^2-): ≤0.002%

cation traces

Fe: ≤5 ppm

heavy metals (as Pb): ≤5 ppm

References

Merck

Merck 13,4259

Beilstein

Beil. 1,IV,3017

Fieser

Fieser 1,397 / Fieser 2,200 / Fieser 4,238 / Fieser 5,312 / Fieser 6,264 / Fieser 7,158 / Fieser 8,231 / Fieser 9,224 / Fieser 10,186 / Fieser 11,240 / Fieser 12,232 / Fieser 13,136 / Fieser 14,168 / Fieser 15,161 / Fieser 16,171

reference

Corp MSDS 1 (1), 1733:C / FT-IR 2 (1), 730:A / FT-IR 1 (1), 465:A / IR-Spectra (3), 276:A / IR-Spectra (2), 248:A / RegBook 1 (1), 509:A / Sax 6, 1451 / Structure Index 1, 73:A:1 / Vapor Phase 3, 572:B

Safety

Hazard Codes

Risk Statements

23/24/25-34-39/23/24/25-40-43

Safety Statements

26-36/37/39-45-51

RIDADR

UN 1198 3/PG 3

WGK Germany

UEL

70.00%

LEL

7.00%

Flash Point(F)

133 °F

Flash Point(C)

56 °C

Related Categories

... Routine Reagents > ACS Grade

... Aldehydes > C1 to C6

MSDS

Specification Sheet

Certificate of Analysis

Certificate of Origin

More Information

Formaldehyde solution

ACS reagent, 37 wt. % in H2O

ACS reagent, 37 wt. % in H₂O