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Documenti fondamentali

320501

Sigma-Aldrich

Acido solforico

ACS reagent, 95.0-98.0%

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About This Item

Formula condensata:
H2SO4
Numero CAS:
Peso molecolare:
98.08
Beilstein:
2037554
Numero CE:
Numero MDL:
Codice UNSPSC:
12352106
ID PubChem:

Grado

ACS reagent

Densità del vapore

<0.3 (25 °C, vs air)

Tensione di vapore

1 mmHg ( 146 °C)

Descrizione

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

Saggio

95.0-98.0%

Stato

liquid

Residuo alla calcinazione

≤5 ppm

Colore

APHA: ≤10

pH

1.2 (5 g/L)

P. ebollizione

~290 °C (lit.)

Densità

1.840 g/mL at 25 °C (lit.)

Anioni in tracce

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

Cationi in tracce

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

Stringa SMILE

OS(O)(=O)=O

InChI

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

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Pittogrammi

Corrosion

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

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

Codice della classe di stoccaggio

8B - Non-combustible corrosive hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


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I A Panagiotopoulos et al.
Bioresource technology, 130, 570-577 (2013-01-22)
A two-stage pretreatment approach, employing steam followed by organosolv treatment, was assessed for its ability to fractionate and recover most of the hemicellulose, lignin and cellulose components of poplar wood chips. A mild steaming stage was initially used to maximise
Francesco Riccobono et al.
Science (New York, N.Y.), 344(6185), 717-721 (2014-05-17)
Atmospheric new-particle formation affects climate and is one of the least understood atmospheric aerosol processes. The complexity and variability of the atmosphere has hindered elucidation of the fundamental mechanism of new-particle formation from gaseous precursors. We show, in experiments performed
João Almeida et al.
Nature, 502(7471), 359-363 (2013-10-08)
Nucleation of aerosol particles from trace atmospheric vapours is thought to provide up to half of global cloud condensation nuclei. Aerosols can cause a net cooling of climate by scattering sunlight and by leading to smaller but more numerous cloud
Siegfried Schobesberger et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(43), 17223-17228 (2013-10-09)
Atmospheric aerosols formed by nucleation of vapors affect radiative forcing and therefore climate. However, the underlying mechanisms of nucleation remain unclear, particularly the involvement of organic compounds. Here, we present high-resolution mass spectra of ion clusters observed during new particle
Sam Wouters et al.
Journal of chromatography. A, 1355, 253-260 (2014-06-30)
A microfluidic membrane suppressor has been constructed to suppress ions of alkaline mobile-phases via an acid-base reaction across a sulfonated poly(tetrafluoroethylene)-based membrane and was evaluated for anion-exchange separations using conductivity detection. The membrane was clamped between two chip substrates, accommodating

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