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Sigma-Aldrich

Chloral hydrate

≥99%

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Synonym(s):
Trichloroacetaldehyde hydrate
Linear Formula:
Cl3CCH(OH)2
CAS Number:
302-17-0
Molecular Weight:
165.40
Beilstein:
1698497
EC Number:
206-117-5
MDL number:
MFCD00044479
UNSPSC Code:
12352100
PubChem Substance ID:
57647358
NACRES:
NA.22

Quality Level

100

Assay

≥99%

reaction suitability

reagent type: cross-linking reagent

drug control

USDEA Schedule IV

impurities

chlor alcoholate, complies
 organic volatile impurities, complies (GC)
 residual solvents Toluene, Chloroform, Benzene, complies
≤0.002% heavy metals (as Pb)
≤0.1% non-volatile matter

ign. residue

≤0.1% (as SO4)

pH

2.8-5.5 (20 °C, 10%)

mp

57 °C (lit.)

anion traces

chloride (Cl-): ≤70 mg/kg

suitability

complies for appearance of solution
complies for reaction against H2SO4

SMILES string

OC(O)C(Cl)(Cl)Cl

InChI

1S/C2H3Cl3O2/c3-2(4,5)1(6)7/h1,6-7H

InChI key

RNFNDJAIBTYOQL-UHFFFAOYSA-N

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Application

Chloral hydrate is used in many protocols as a clearing agent for the microscopic examination of plant tissues without disrupting the cellular features.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301,H315,H319

Hazard Classifications

Acute Tox. 3 Oral - Eye Irrit. 2 - Skin Irrit. 2

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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An improved clearing and mounting solution to replace chloral hydrate in microscopic applications.
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