chromotropic acid

[¦krō·mə¦träp·ik ′as·əd]

(organic chemistry)

C₁₀H₈O₈S₂ White, needlelike crystals that are soluble in water; used as an analytical reagent and azo dye intermediate.

Mentioned in ?

Arsenazo

References in periodicals archive ?

The FA concentration in the gaseous phase was measured with the formaldehyde gas detector (Model FP-40 Riken Keiki, Japan) and in the liquid phase by a standard photometric method using a reaction with 1% chromotropic acid [16].

Bioconversion of airborne methylamine by immobilized recombinant amine oxidase from the thermotolerant yeast Hansenula polymorpha

Stock solution of HCT containing 200 [micro]g/ml was prepared in ethyl acetate for the chromotropic acid (CTA) method.

Chromotropic acid (CTA) method was a colorimetric method used for the selective determination of HCT (minor component) in a combination containing IRB as a major component.

Analysis of eprosartan-hydrochlorothiazide and irbesartan-hydrochlorothiazide binary mixtures by derivative spectrophotometry

Spectrophotometric determination of nitrate using chromotropic acid. Anal.

Intraspecific competition in Chenopodium album varies with resource availability

Pour 0,5 ml of chromotropic acid and 2 ml concentrated [H.sub.2]S[O.sub.4] to every test-tube.

Possibilities of using stone wool waste in composting/Akmens vatos atlieku panaudojimo galimybes kompostuoti

Immediately upon completion of the RF heating process, three sets of shavings obtained from the treated part of each pole section were placed in a glass dish in a fume hood and sprayed with chromotropic acid solution.

Chromotropic acid. -- 2.0 g of 4,5-di-hydroxynaphthalene-2, 7-disulfonic acid was dissolved in 400 mL of 0.5 M sulfuric acid.

None of the samples showed any reaction with chromotropic acid, indicating that there was no detectable hexavalent chromium ([less than] 15 ppm of Cr(VI)) (13,14).

Comparing the chromotropic acid data with the spectrophotometer analysis, some discrepancies can be seen in Tables 2 through 4.

The chips recovered from the pole sections were also tested using chromotropic acid at different time intervals (Table 6).

APPLICATION OF RADIO-FREQUENCY HEATING TO UTILITY POLES. PART 2. ACCELERATED FIXATION OF CHROMATED COPPER ARSENATE