84727
Sulfuric acid
for the determination of nitrogen, ≥97.0%
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About This Item
Linear Formula:
H2SO4
CAS Number:
Molecular Weight:
98.08
UNSPSC Code:
41115710
NACRES:
NA.21
PubChem Substance ID:
EC Number:
231-639-5
Beilstein/REAXYS Number:
2037554
MDL number:
Assay:
≥97.0%
Form:
liquid
agency
suitable for SM 4500 - NH3
Quality Level
vapor density
<0.3 (25 °C, vs air)
vapor pressure
1 mmHg ( 146 °C)
description
Nominally 95-98% H2SO4, for inorganic trace analysis
assay
≥97.0%
form
liquid
quality
for the determination of nitrogen
impurities
≤0.0005% total nitrogen (N)
ign. residue (900 °C)
≤0.0005%
color
clear
bp
~290 °C (lit.)
density
1.840 g/mL at 25 °C (lit.)
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
General description
Sulfuric acid can be produced by dry distillation of iron sulfate heptahydrate, copper sulfate pentahydrate. When these compounds were heated they decompose to form iron and copper oxides eliminating water and sulphur trioxide which combine together to form dilute solution of sulphuric acid. It is suitable as dehydrating agent, catalyst, active reactant in chemical industry. It is also suitable to control pH of saline solutions to strong fuming acids.
Application
Sulfuric acid may be used as digestive reagent in Kjeldahl method to determine nitrogen.
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signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
Storage Class
8B - Non-combustible corrosive hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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Navin G. Ashar, Kiran R. Golwalkar
A Practical Guide to the Manufacture of Sulfuric Acid, Oleums, and Sulfonating Agents (2013)
Nitrogen determination by a continuous digestion and analysis system.
Ferrari, Andres.
Annals of the New York Academy of Sciences, 87, 792-800 (1960)
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