Acid cleanings and staining compositions

Details Acid cleanings and staining compositions Acid cleanings and staining compositions

1993-10-05

1995-06-13

Skane, Christine

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

134 41, 134 42, 252136, 252142, 252143, 252146, 252148, 252149, 252173, 252539, 252558, C11D 340, C11D 708, C11D 760

Patent

active

054240000

ABSTRACT:
Strong acid cleaning compositions supplemented with stable, protein-reactive staining dyes are provided which can be used for the acid clean-up of metallic food processing equipment while also giving a visual indication of residual soils on equipment surfaces. The compositions are provided as dilutable concentrates including water, a staining dye and at least about 5% by weight of a strong inorganic acid; the dye is stable in the concentrate under storage at 25.degree. C. for at least about 3 months. The concentrates are diluted in water at the point of use and in such form have a pH of up to about 4. The preferred concentrates of the invention include water, from about 10%-50% by weight of an acid mixture comprising phosphoric, sulfuric and nitric acids, and Acid Violet 19 dye.

REFERENCES:
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patent: 4589925 (1986-05-01), Young
patent: 4776974 (1988-10-01), Stanton et al.
Chemical Abstracts accession No. 85:147910, for SU 517661, Jun. 15, 1976.
Derwent Abstracts accession No. 77-12340Y, for SU 517661, Jul. 8, 1976.
Chemical Abstracts accession No. 121:86262, for CN 1073710, Jun. 30, 1993.
Chemical Abstracts accession No. 93:9903, for Grig. Sanit. (1980), (4), 43-4 No Month available.
Talati et al., "Dyes as Corrosion Inhibitors . . . " in J. Electrochem. Soc. India (1986), 35(3), 175-181 No Month available.
Chemical Abstracts Registry file printout for RN#3244-80-0, 1994 No Month available.
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FOAMCHEK Label by West Agro, Inc., 1990 No Month available.
HI TEMP ACID 1000 Label by West Agro, Inc., Sep. 30, 1993.
Hi Temp Acid 2000 Label by West Agro, Inc., Sep. 30, 1993.
ACI-TEC Label by West Agro, Inc., 1992 No Month available.
Goldenberg et al.; Detection of Protein Deposition on Contact Lens Type Polymeric Hydrogels by Coomassie Blue R Staining; Biomaterials 1991, vol. 12 Apr.
Bickar et al.; A High-Affinity Protein Stain for Western Blots, Tissue Prints, and Electrophoretic Gels; Analytical Biochemistry 203, 109-155 (1992).

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