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15512

Sigma-Aldrich

Formaldeide

meets analytical specification of USP, ≥34.5 wt. %

Sinonimo/i:

Formalina

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About This Item

Formula condensata:
HCHO
Numero CAS:
50-00-0
Peso molecolare:
30.03
Beilstein:
1209228
Numero MDL:
MFCD00003274
Codice UNSPSC:
12352114
eCl@ss:
39021101
ID PubChem:
57647382
NACRES:
NA.21

Densità del vapore

1.03 (vs air)

Livello qualitativo

200

Tensione di vapore

52 mmHg ( 37 °C)

Temp. autoaccensione

572 °F

Qualità

meets analytical specification of USP

contiene

9.0-15.0% methanol as stabilizer (GC)

Concentrazione

≥34.5 wt. %
25-50%

Impurezze

acidic reac. substances, complies
 residual solvents, complies

Residuo alla calcinazione

≤0.01% (as SO4)

Densità

1.09 g/mL at 25 °C (lit.)

Compatibilità

corresponds for identity

Stringa SMILE

[H]C([H])=O

InChI

1S/CH2O/c1-2/h1H2
WSFSSNUMVMOOMR-UHFFFAOYSA-N

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Descrizione generale

Formaldehyde solution commercially formaldehyde solution is an aqueous solution containing 37% formaldehyde and 8-10% methanol. Formaldehyde solution can be activated by adding the catalytic amount of lanthanide triflate. This activated formaldehyde solution was employed for the smooth hydroxymethylation reaction of silyl enol ethers. Formaldehyde solution reacts with silyl enol ethers to afford the corresponding hydroxymethylated adducts in high yields.

Applicazioni

Formaldehyde solution was used to prepare the formaldehyde stock solution for the development of transparent sol-gels with entrapped sensitive and selective reagents for the detection of formaldehyde in air. It may be used in the preparation of nanocrystalline metal (Cu, Hg, Zn, Bi, Pb) sulfides having different shapes and different particle sizes.

Altre note

The article number 15512-4X2.5L-R will be discontinued. Please order the single bottle 15512-2.5L-R which is physically identical with the same exact specifications.
The article number 15512-6X1L-R will be discontinued. Please order the single bottle 15512-1L-R which is physically identical with the same exact specifications.

Avvertenze

Danger

Classi di pericolo

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

Organi bersaglio

Eyes,Central nervous system, Respiratory system

Codice della classe di stoccaggio

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

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

143.6 °F - closed cup

Punto d’infiammabilità (°C)

62 °C - closed cup

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Certificati d'analisi (COA)

Lot/Batch Number
STBL1232
STBL0225
STBK8092
STBK7513
STBK2014

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Soluzione di formaldeide al 37% circa GR for analysis stabilized with about 10% methanol ACS,Reag. Ph Eur

Sigma-Aldrich

1.04003

Soluzione di formaldeide al 37% circa

Soluzione di formaldeide 37%, EMPROVE® EVOLVE

SAFC

1.04002

Soluzione di formaldeide

Lanthanide triflates as water-tolerant Lewis acids. Activation of commercial formaldehyde solution and use in the aldol reaction of silyl enol ethers with aldehydes in aqueous media.
Kobayashi S and Hachiya I.
The Journal of Organic Chemistry, 59(13), 3590-3596 (1994)
Lanthanide Trifluoromethanesulfonates as Stable Lewis Acids in Aqueous Media. Yb (OTf)3 Catalyzed Hydroxymethylation Reaction of Silyl Enol Ethers with Commercial Formaldehyde Solution.
Kobayashi S.
Chemistry Letters (Jpn), 12, 2187-2190 (1991)
Microwave synthesis of nanocrystalline metal sulfides in formaldehyde solution.
Liao X-H, et al.
Materials Science and Engineering, B, 85(1), 85-89 (2001)
Opas Bunkoed et al.
Analytica chimica acta, 659(1-2), 251-257 (2010-01-28)
We report the development of transparent sol-gels with entrapped sensitive and selective reagents for the detection of formaldehyde. The sampling method is based on the adsorption of formaldehyde from the air and reaction with beta-diketones (for example acetylacetone) in a
James Larkin et al.
The New England journal of medicine, 373(1), 23-34 (2015-06-02)
Nivolumab (a programmed death 1 [PD-1] checkpoint inhibitor) and ipilimumab (a cytotoxic T-lymphocyte-associated antigen 4 [CTLA-4] checkpoint inhibitor) have been shown to have complementary activity in metastatic melanoma. In this randomized, double-blind, phase 3 study, nivolumab alone or nivolumab plus
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