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1.04003

Formaldehyde solution about 37%

GR for analysis stabilized with about 10% methanol ACS,Reag. Ph Eur

Synonym(s):

Formaldehyde solution, Formaline solution, Methanal solution, Methylaldehyde solution, Formalin

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About This Item

Linear Formula:
HCHO
CAS Number:
50-00-0
Molecular Weight:
30.03
NACRES:
NA.21
UNSPSC Code:
12352114
Beilstein/REAXYS Number:
1209228
MDL number:
MFCD00003274
Grade:
ACS reagent
Bp:
93-96 °C/1013 hPa
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grade

ACS reagent

Quality Segment

400

agency

reag. Ph. Eur.

vapor density

1.03 (vs air)

form

liquid

autoignition temp.

300 °C (Formaldehyde), 572 °F

expl. lim.

7-73 % (v/v) Formaldehyde)

concentration

36.5-38.0% (iodometric, acidimetric)

dilution

(for analytical testing)

pH

2.8-4.0 (20 °C in H2O)

bp

93-96 °C/1013 hPa

mp

<-15 °C

transition temp

flash point 62 °C (Formaldehyde)

density

1.09 g/cm3 at 20 °C, 1.09 g/mL at 25 °C (lit.)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

15-25°C

SMILES string

[H]C([H])=O

InChI

1S/CH2O/c1-2/h1H2

InChI key

WSFSSNUMVMOOMR-UHFFFAOYSA-N

General description

Formaldehyde (HCOH) is one of the most familiar and effective fixatives. The fixation of the histological specimen material of human or animal origin is commonly performed in a 4% or 10% Formaldehyde solution. Chemically, the 4 % Formaldehyde solution equals a 10 % Formalin solution.

Analysis Note

Assay (acidimetric): 36.5 - 38.0 %
Assay (iodometric): 36.5 - 38.0 %
Identity: passes test
Color: ≤ 10 Hazen
Appearance of solution: passes test
Free acid (as HCOOH): ≤ 0.025 %
Density (20 °C): 1.080 - 1.090 g/ml
Chloride (Cl): ≤ 0.0001 %
Sulfate (SO₄): ≤ 0.002 %
Heavy metals (as Pb): ≤ 0.0002 %
Fe (Iron): ≤ 0.0001 %
Methanol (GC): 9.0 - 11.0 %
Sulfated ash: ≤ 0.002 %

signalword

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Carc. 1B - Eye Dam. 1 - Muta. 2 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 1 - STOT SE 3

target_organs

Eyes,Central nervous system, Respiratory system

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

143.6 °F - closed cup

flash_point_c

62 °C - closed cup

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Deleterious substance

pdsc

Specified Class I Designated Chemical Substances

prtr

Group 4: Flammable liquids + Type 2 petroleums + Hazardous rank III + Water soluble liquid

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

1040035000: + NAPE1040032500-E1L: + 1040039025: + 1040039180: + 1040031000: + 1040032500: + 1040030000:

jan

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