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320501

Sigma-Aldrich

Sulfuric acid

ACS reagent, 95.0-98.0%

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About This Item

Linear Formula:
H2SO4
CAS Number:
7664-93-9
Molecular Weight:
98.08
Beilstein:
2037554
EC Number:
231-639-5
MDL number:
MFCD00064589
UNSPSC Code:
12352106
PubChem Substance ID:
329753980

grade

ACS reagent

vapor density

<0.3 (25 °C, vs air)

vapor pressure

1 mmHg ( 146 °C)

description

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

Assay

95.0-98.0%

form

liquid

ign. residue

≤5 ppm

color

APHA: ≤10

pH

1.2 (5 g/L)

bp

~290 °C (lit.)

density

1.840 g/mL at 25 °C (lit.)

anion traces

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

cation traces

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

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Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H290 - H314

Hazard Classifications

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

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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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
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