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1.06161

Supelco

Murexide

(ammonium purpurate) metal indicator ACS

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Synonym(s):
Murexide, Ammonium purpurate, acid
Empirical Formula (Hill Notation):
C8H8N6O6
CAS Number:
Molecular Weight:
284.19
MDL number:
EC Index Number:
221-266-6

grade

ACS reagent

Quality Level

form

solid

loss

≤2.0% loss on drying, 105°C

pH

5 (20 °C, 1 g/L in H2O)

solubility

1 g/L

bulk density

330 kg/m3

Amax

520-524 nm in water

storage temp.

2-30°C

InChI

1S/C8H4N5O6.H3N/c14-3-1(4(15)11-7(18)10-3)9-2-5(16)12-8(19)13-6(2)17;/h(H2,10,11,14,15,18)(H2,12,13,16,17,19);1H3/q-1;/p+1

InChI key

PCCZWUCAYILEMX-UHFFFAOYSA-O

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Murexide (ammonium purpurate) metal indicator ACS

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1.06161

Murexide

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Sigma-Aldrich

222461

Murexide

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1.01200

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1.01201

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form

solid

form

powder

form

solid

form

solid

pH

5 (20 °C, 1 g/L in H2O)

pH

-

pH

3.2 (20 °C, 100 g/L in H2O)

pH

3.2 (20 °C, 100 g/L in H2O)

solubility

1 g/L

solubility

-

solubility

620 g/L

solubility

-

storage temp.

2-30°C

storage temp.

room temp

storage temp.

15-25°C

storage temp.

15-25°C

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

300

Linkage

Replaces: MX1665-3; MX1665

Analysis Note

Identity (IR-spectrum): passes test
Identity (UV/VIS-Spectrum): passes test
Absorption maximum (water): 520 - 524 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.01 g/l; water): ≥ 300
Sulfated ash (800 °C): ≤ 1.0 %
Loss on Drying (105°C): ≤ 2.0 %
Suitability as indicator (for metal titration): passes test

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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