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CAS No 7788-98-9 , diazanium Search by region : China

  • Name: diazanium
  • Synonyms: diammonium salt; Neutral ammonium chromate; Chromic acid (H2CrO4); Ammonium chromate(VI); EINECS 232-138-4; HSDB 482;dioxido(dioxo)chromium;Diammonium chromate;diazanium;
  • CAS Registry Number:
  • Transport: UN 1479
  • Safety Statements: Mutation data reported. When heated to decomposition it emits toxic vapors of NH4.Analytical Methods:   For occupational chemical analysis use NIOSH: chromium hexavalent 7024.
  • Hazard Symbols: Toxic by inhalation, strong irritant. TLV: TWA 0.05 mg(Cr)/m3; Confirmed Human Carcinogen.
  • EINECS: 232-138-4
  • Molecular Weight: 152.07062
  • InchiKey: MFFLHUNPSHBKRG-UHFFFAOYSA-P
  • InChI: InChI=1S/Cr.2H3N.4O/h;2*1H3;;;;/q;;;;;2*-1/p+2
  • Risk Statements: 49-8-43-50/53
  • Molecular Formula: CrH8N2O4
  • Molecular Structure:CAS No:7788-98-9 diazanium

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References of diazanium
Title: Ammonium Chromate(VI)
CAS Registry Number: 7788-98-9
Synonyms: Neutral ammonium chromate
Molecular Formula: CrH8N2O4
Molecular Weight: 152.07
Percent Composition: Cr 34.19%, H 5.30%, N 18.42%, O 42.08%
Line Formula: (NH4)2CrO4
Literature References: Prepn: Gmelins, Chromium (8th ed.) 52, part B, pp 707-712 (1962).
Properties: Yellow acicular crystals; loses some NH3 in air; decomposes at 185°. d 1.8. Soly in water: 19.78% (0°); 41.20% (75°). Sparingly sol in liquid ammonia, acetone. Slightly sol in methanol. Practically insol in ethanol. The aq soln is alkaline. Keep well closed.
Density: d 1.8
Use: Sensitizing gelatin in photography, in textile printing pastes, in fixing chromate dyes on wool, and as a reagent in analytical chemistry.