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Merck

22752

Chlorine

puriss., ≥99.8%

Synonym(s):

Chlorine gas

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About This Item

Empirical Formula (Hill Notation):
Cl2
CAS Number:
Molecular Weight:
70.91
UNSPSC Code:
12142100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
231-959-5
Beilstein/REAXYS Number:
3902968
MDL number:
Assay:
≥99.8%
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vapor density

2.48 (vs air)

Quality Level

vapor pressure

4800 mmHg ( 20 °C)

grade

puriss.

assay

≥99.8%

resistivity

1E9 μΩ-cm, 20°C

evapn. residue

≤40 ppm

bp

−34 °C (lit.)

mp

−101 °C (lit.)

SMILES string

ClCl

InChI

1S/Cl2/c1-2

InChI key

KZBUYRJDOAKODT-UHFFFAOYSA-N

Packaging

Cylinder with net ~2 kg
DIN 477 nr.8

Analysis Note

corresponds to DIN EN 937 tab.1 and tab.2: type 1 ′chemicals used for treatment of water intended for human consumption-chlorine ′

Disclaimer

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signalword

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Aquatic Acute 1 - Eye Irrit. 2 - Ox. Gas 1 - Press. Gas Compr. Gas - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

2A - Gases

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves



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Per Bengtson et al.
Environmental microbiology, 11(6), 1330-1339 (2009-05-21)
Several studies have demonstrated that extensive formation of organically bound chlorine occurs both in soil and in decaying plant material. Previous studies suggest that enzymatic formation of reactive chlorine outside cells is a major source. However, the ecological role of
Melissa A Gessner et al.
American journal of physiology. Lung cellular and molecular physiology, 304(11), L765-L773 (2013-04-09)
Chlorine (Cl₂) is a highly irritating and reactive gas with potential occupational and environmental hazards. Acute exposure to Cl₂ induces severe epithelial damage, airway hyperreactivity, impaired alveolar fluid clearance, and pulmonary edema in the presence of heightened inflammation and significant
Marie Deborde et al.
Water research, 42(1-2), 13-51 (2007-10-05)
Numerous inorganic and organic micropollutants can undergo reactions with chlorine. However, for certain compounds, the expected chlorine reactivity is low and only small modifications in the parent compound's structure are expected under typical water treatment conditions. To better understand/predict chlorine