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Merck
CN

20801

1,1,1-Trichloro-2-methyl-2-propanol hemihydrate

meets analytical specification of Ph. Eur., BP, NF, 98-100.5% (calc with ref. to anhyd. subst.)

Synonym(s):

β,β,β-Trichloro-tert-butyl alcohol hemihydrate, ‘Acetone chloroform’, ‘Chlorobutanol’

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About This Item

Linear Formula:
Cl3CC(CH3)2OH · 0.5H2O
CAS Number:
6001-64-5
Molecular Weight:
186.46
UNSPSC Code:
41116107
NACRES:
NA.21
PubChem Substance ID:
57647873
EC Number:
249-042-3
Beilstein/REAXYS Number:
878167
MDL number:
MFCD02179352
Assay:
98-100.5% (calc with ref. to anhyd. subst.)
Form:
solid

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InChI key

WRWLCXJYIMRJIN-UHFFFAOYSA-N

InChI

1S/2C4H7Cl3O.H2O/c2*1-3(2,8)4(5,6)7;/h2*8H,1-2H3;1H2

SMILES string

O.CC(C)(O)C(Cl)(Cl)Cl.CC(C)(O)C(Cl)(Cl)Cl

assay

98-100.5% (calc with ref. to anhyd. subst.)

form

solid

quality

meets analytical specification of Ph. Eur., BP, NF

impurities

≤0.002% heavy metals (as Pb), 4.5-5.5% water (Karl Fischer)

ign. residue

≤0.1% (as SO4)

mp

76-80 °C

anion traces

chloride (Cl-): ≤100 mg/kg

application(s)

pharmaceutical (small molecule)

Quality Level

200

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Application

1,1,1-Trichloro-2-methyl-2-propanol hemihydrate (chlorobutanol) is a preservative used as a standard for quantifying preservatives in pharmaceutical formulations by using capillary electrophoretic method. It has also been used to anesthetize leeches for preparing c-DNA library from regenerating retzius cells.

Biochem/physiol Actions

Chlorobutanol or 1,1,1-Trichloro-2-methyl-2-propanol is a opthalmic preservative and sedative hypnotic that possess antibacterial and antifungal properties. It also decreases the conduction velocity and induces conduction failure and automaticity within isolated ventricular muscle strips as well as impacts myocardial cells by acting on cell membrane and reduces isometric tension produced by heart.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

212.0 °F - closed cup

flash_point_c

100 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SDBB6179
SDBB2471
SDBB2475
STBL1021
STBL2755

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S Korneev et al.
Invertebrate neuroscience : IN, 3(2-3), 185-192 (1998-10-23)
We have constructed a subtractive cDNA library from regenerating Retzius cells of the leech, Hirudo medicinalis. It is highly enriched in sequences up-regulated during nerve regeneration. Sequence analysis of selected recombinants has identified both novel sequences and sequences homologous to
Elena S Novitskaya et al.
Clinics in dermatology, 29(3), 295-299 (2011-04-19)
Identifying contact allergens in ophthalmic medications can be a challenging and daunting experience. We summarize data on topical ophthalmic medications with the potential to cause periorbital contact dermatitis and allergic conjunctivitis, highlighting current dilemmas and controversies in this area. The
K Hermsmeyer et al.
The American journal of physiology, 230(2), 306-310 (1976-02-01)
The negative inotropic effect of a commonly used formulation of bradykinin (Sandoz BRS-640) was found to be due to chlorobutanol, a constituent of the preparation. Solutions containing up to 100 mug of crystalline bradykinin/ml had no effect on tension or
Małgorzata Jaworska et al.
Journal of separation science, 28(2), 137-143 (2005-03-10)
Preservatives are used to protect pharmaceutical formulations from microbial attack during the period of administration to the patient. Because of their biological activity, preservatives have to be identified and assayed according to the same rules as apply to active components.

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