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硫酸,Sulfuric acid;ACS reagent, 95.0-98.0%

别名:浓硫酸,vitriol,oil of vitriol,spirit of alum,vitriolic acid

线性分子式: H2SO4 CAS号: 7664-93-9 分子量: 98.08 Beilstein: 2037554 EC 号: 231-639-5 MDL编号: MFCD00064589 PubChem化学物质编号: 329752826 NACRES: NA.21
制造商品牌: 西格玛 Sigma-Aldrich
货号(SKU): 258105
CAS号: 7664-93-9
MDL号: MFCD00064589
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说明

应用

Sulfuric acid can be used as a catalyst:
  • In the hydrolysis of primary or secondary nitroalkane salts to aldehydes or ketones.
  • In the selective hydrolysis of nitriles to amides.
  • To synthesize amides of t-alkylcarbinamines via Ritter reaction between nitriles and alkenes.
  • To prepare 3,4-dialkyl-2(5H)-furanones by carbonylation of α,β-unsaturated aldehydes.
  • In the nitration of aromatic carbocycles and heteroaromatic compounds.
  • In the Friedel–Craft ketone synthesis using anhydrides via α-amidoalkylation reaction.

H2SO4 can also be used in the following reactions:
  • Michael′s addition reactions
  • Electrophilic substitution reactions
  • Esterification of highly hindered aromatic acids
  • Aldol condensation reaction
  • Beckmann rearrangement
  • Hofmann–Loffler–Freytag reaction
  • Isomerization
  • Dehydrogenation
  • Sulfonation
 

属性

等级

ACS reagent

质量水平

200

蒸汽密度

<0.3 (25 °C, vs air)

蒸汽压

1 mmHg ( 146 °C)

描述

Free from suspended or insoluble matter
Nominally 95-98% H2SO4

测定

95.0-98.0%

形式

liquid

灼烧残渣

≤5 ppm

颜色

APHA: ≤10

pH值(酸碱度)

1.2 (5 g/L)

bp

~290 °C (lit.)

密度

1.840 g/mL at 25 °C (lit.)

痕量阴离子

MnO4- reducers: ≤2 ppm
chloride (Cl-): ≤0.2 ppm
nitrate (NO3-): ≤0.5 ppm

痕量阳离子

As: ≤0.01 ppm
Fe: ≤0.2 ppm
Hg: ≤5 ppb
NH4+: ≤2 ppm
heavy metals (as Pb): ≤1 ppm

SMILES string

OS(O)(=O)=O

InChI

1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)

InChI key

QAOWNCQODCNURD-UHFFFAOYSA-N

 

安全信息

象形图

Corrosion

警示用语:

Danger

危险声明

危险分类

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

储存分类代码

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

个人防护装备

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

商品规格
属性名称属性值
储存温度 Storage temp.常温阴凉避光
全球实时库存 Availability √美国St. Louis ≥ 33 | 欧洲Eur. ≥ 27 | 東京Tokyo ≥ 9 | 香港与北京 ≥ 16
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