QUAB 188

Aqueous solution of the active substance 3-chloro-2-hydroxypropyl trimethylammonium chloride (commonly referred to as chlorohydrin).

Quab 188
Quab 188

QUAB 188 is available in two grades as aqueous solutions:

  • Grade 1: 65% active matter
  • Grade 2: 69% active matter

Empirical Formula






Molecular weight

188.10 g/mol


colorless to slightly yellow, clear liquid


practically odorless

Density (20 °C)

65 wt% : 1.16 g/cm³
69 wt% : 1.17 g/cm³

Flash point (Abel-Pensky)

>200° C (>392° F)

Vapor pressure (20 °C)

1.5 kPa (15 mbar)*

Viscosity (20 °C)

65 wt% : approx. 20 mPas
69 wt% : approx. 40 mPas


miscible with water and lower alcohols, non-miscible with hydrocarbons and chlorinated hydrocarbons

* Resulting from partial pressure of water in QUAB 188

The product can be stored for prolonged periods (1-2 years) with practically no loss of activity. It is stable at temperatures of up to 50 °C. At higher temperatures, the pH may be slightly reduced over time. However, this does not affect the application properties of the product.

Depending on the total solids content, crystallization may occur at storage temperatures below 0 °C. Total solids are defined as the total of all solid compounds dissolved in the QUAB solution.

Crystallization points:

Quab 188 (69 wt.%): below -4 °C (24.8 °F)
Quab 188 (65 wt.%): below -34 °C (-29.2 °F)

Chemical storage tanks

Suitable Materials:
Stainless steel, types 316L and 316TI (DIN 1.4571), are basically suitable for transport containers but are recommended for storage only with restrictions. Pickling of containers and pipes with attention to welds is mandatory. These materials are subject to pitting after prolonged periods of contact and at elevated temperatures. However, since transport containers are not subject to prolonged contact, these materials may be used for QUAB 188. Plastic containers may be used in all cases.

We recommend a coating for storage tanks made of stainless steel types, 316L and 316TI (DIN 1.4571). Alternatively, fibre reinforced plastic tanks or other coated storage containers may be used. Suitable materials for QUAB 188 include polyester, polyethylene, PVC, heat cured phenolic resins or epoxy resins, neoprene, Buna S and Buna N. Enameled containers and tanks may also be used. Any damage in the coating must be repaired.

Unsuitable Materials:
For QUAB 188, containers made of boiler plate H II, aluminum (99.5) and stainless steel types, 304L and 321 (DIN 1.4541) are unsuitable. At 50 °C, the corrosion rate of boiler plate H II is 0.2 mm per year, that of aluminum (99.5) 0.1 mm per year. Test samples of stainless steel types, 304L and 321 (DIN1.4541) show pitting of up to 0.05 g/m2 per day.

Tanker truck



240 kg / 550 lbs


1100 kg / 2200 lbs

Tank Truck

20,000 kg / 45,000 lbs

Rail Cars

90,000 kg / 200,000 lbs
Quab 188 Packaging


Chlorohydrin Content

≥ 65 %
≥ 69 %

Epoxide Content

≤ 500 ppm
≤ 500 ppm

Active Content* (as chlorohydrin)

≥ 65 %
≥ 69 %

Glycol Content**

≤ 0.8 %
≤ 0.8 %

Epichlorohydrin (ECH)

≤ 10 ppm
≤ 10 ppm


≤ 20 ppm
≤ 20 ppm


3 - 6
3 - 6

Additional information (not part of the specifications)


32 - 35 %
28 - 31 %

* Epoxide and chlorohydrin together amount to the active content
** Quab-glycol is inert in cationization reactions
*** Undiluted solution

For detailed safety, handling, and toxicology information, see the corresponding material safety data sheets, which are available upon request.

QUAB 188 has low acute toxicity and low irritation properties to skin and mucous membranes. It is toxic to the kidneys. A chronic effect through long-term contact cannot be ruled out. Therefore, the product should be handled with appropriate precautions. All contact should be avoided.

Following contact with skin or mucous membranes, flush or clean with plenty of water. Apparatuses and equipment should also be washed with plenty of water. Wash water containing QUAB 188 or residual amounts of QUAB 188 must be disposed of according to the material safety data sheet.

Conversion with alkali causes the corresponding epoxide (QUAB 151) to form. This substantially changes the properties of the solution/mixture. Consequently, the handling instructions for QUAB 151 must be observed.

Stability of Quab 188

The storage stability of Quab 188 over a long period of time can be a concern. This document provides answers for questions regarding the quality of Quab 188.