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15512

Sigma-Aldrich

甲醛 溶液

meets analytical specification of USP, ≥34.5 wt. %

别名:
福尔马林
线性分子式:
HCHO
CAS号:
分子量:
30.03
Beilstein:
1209228
MDL编号:
eCl@ss:
39021101
PubChem化学物质编号:
NACRES:
NA.21

质量水平

200

蒸汽密度

1.03 (vs air)

蒸汽压

52 mmHg ( 37 °C)

测定

≥34.5 wt. %

自燃温度

572 °F

质量

meets analytical specification of USP

包含

9.0-15.0% methanol as stabilizer (GC)

浓度

25-50%

杂质

acidic reac. substances, complies
residual solvents, complies

灼烧残渣

≤0.01% (as SO4)

密度

1.09 g/mL at 25 °C (lit.)

适用性

corresponds for identity

SMILES string

[H]C([H])=O

InChI

1S/CH2O/c1-2/h1H2

InChI key

WSFSSNUMVMOOMR-UHFFFAOYSA-N

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一般描述

市场上销售的甲醛溶液是含有37%甲醛和8-10%甲醇的水溶液。通过加入催化量的镧系元素三氟甲磺酸酯,可以活化甲醛溶液。这种活化的甲醛溶液被用于与硅烯醇醚发生平稳的羟甲基化反应。甲醛溶液与硅烯醇醚反应,以高产率获得相应的羟甲基化加合物。

应用

甲醛溶液被用于制备甲醛储液,以便开发包容灵敏性和选择性试剂的透明溶胶凝胶,用于检测空气中甲醛。它可用于制备具有不同形状和不同粒径的纳米晶金属(Cu,Hg,Zn,Bi,Pb)硫化物。

其他说明

货号15512-4X2.5L-R的产品即将停产。请订购15512-2.5L-R单瓶装,因为其具体参数与上述产品本质相同。
货号15512-6X1L-R的产品即将停产。请订购15512-1L-R单瓶装,因为其具体参数与上述产品本质相同。

警示用语:

Danger

危险分类

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

靶器官

Respiratory system

储存分类代码

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

WGK

WGK 3

闪点(F)

143.6 °F

闪点(C)

62 °C

分析证书

原产地证书 (CofO)

Microwave synthesis of nanocrystalline metal sulfides in formaldehyde solution.
Liao X-H, et al.
Materials Science and Engineering, B, 85(1), 85-89 (2001)
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)
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)
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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