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Merck
CN

375616

Sulfuric acid, fuming

ACS reagent, 15% free SO3 basis

Synonym(s):

Oleum

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About This Item

Linear Formula:
H2SO4 · (SO3)x
CAS Number:
Molecular Weight:
98.08
PubChem Substance ID:
UNSPSC Code:
12352106
Beilstein/REAXYS Number:
2037554
MDL number:
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grade

ACS reagent

vapor density

3 (vs air)

vapor pressure

2 mmHg ( 25 °C)

concentration

15% (free SO3)

ign. residue

≤0.002%

color

colorless to very light brown

density

1.925 g/mL at 25 °C (lit.)

anion traces

nitrate (NO3-): ≤1 ppm

cation traces

As: ≤0.03 ppm, Fe: ≤2 ppm, NH4+: ≤3 ppm

SMILES string

O=S(=O)=O.OS(O)(=O)=O

InChI

1S/H2O4S.O3S/c1-5(2,3)4;1-4(2)3/h(H2,1,2,3,4);

InChI key

HIFJUMGIHIZEPX-UHFFFAOYSA-N



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pictograms

Skull and crossbonesCorrosion

signalword

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Skin Corr. 1A - STOT SE 3

target_organs

Respiratory system

supp_hazards

Storage Class

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

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

Regulatory Information

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