MUREXIDE
Ammonium purpurate; Ammonium salt purpuric acid; Sodium 5,5'-nitrilodibarbiturate;  5-((Hexahydro-2,4,6-trioxo-5-pyrimidinyl)imino)-2,4,6(1H,3H,5H)-pyrimidinetrione monoammonium salt; 5,5'-Nitrilodibarbituric acid monoammonium salt; Azanium 2,6-dioxo-5-[(2,4,6-trioxo-1,3-diazinan-5-ylidene) amino]-3H-pyrimidin-4-olate;

MUREXIDE
 

PRODUCT IDENTIFICATION

CAS RN

 3051-09-0; 134-02-1; 410097-48-2; 463929-80-8

EINECS RN

 221-266-6

FORMULA

 C8H8N6O6

MOLE WEIGHT

 284.19

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

red purple powder

MELTING POINT

 > 300 C

BOILING POINT

  

DENSITY

  

SOLUBILITY IN WATER

soluble (Insoluble in alcohol and ether)

pH

 

VAPOR DENSITY

 

REFRACTIVE INDEX

  

FLASH POINT

 

 
STABILITY AND REACTIVITY
STABILITY Stable under normal conditions.

INCOMPATIBLE MATERIALS

  
DECOMPOSITION PRODUCTS Nitrogen oxides, carbon oxides
POLYMERIZATION Has not been reported

NFPA RATINGS

Health: 1; Flammability: 0; Reactivity: 0

 

SAFETY

HAZARD NOTES

  

EYE

May cause eye irritation.

SKIN

May cause skin irritation.

INGESTION

May be harmful if swallowed.

INHALATION

 May cause respiratory tract irritation to mucous membranes and upper respiratory tract. May be harmful if inhaled.

CHRONIC

  

 

TRANSPORT & REGULATORY INFORMATION

UN NO.

  
HAZARD CLASS

 
PACKING GROUP

 

HAZARD SYMBOL

 

RISK PHRASES

  

SAFETY PHRASES

22-24/25

 

OTHER INFORMATION

Murexide is a member of the barbiturate class of compounds. First reported in the 18th century, it can be formed through the successive treatment of uric acid with nitric acid and then ammonia. Murexide is used as a dye in tissue staining procedures, an indicator in complexometric titrations, and a metallochromic chelator of such free metal ions as calcium, zinc,and nickel. (source:http://www.sigmaaldrich.com/)

Metal Titration Indicators

Product

CAS RN.

Dithizone 60-10-6
Purpurin 81-54-9

1-(2-Pyridylazo)-2-naphthol

 85-85-8
N-Phenylanthranilic acid 91-40-7
1H-Benzotriazole 95-14-7
4-Nitroaniline 100-01-6
Pyrocatechol Violet 115-41-3
o-Tolidine 119-93-7
Alizarin Red S 130-22-3
Zincon 135-52-4
Cupferron 135-20-6
1,5-Diphenylcarbazide 140-22-7
8-Quinolinol 148-24-3
Tiron 149-45-1
2-Mercaptobenzothiazole 149-30-4
Potassium thiocyanate 333-20-0
Methyl Red 493-52-7

Hematoxylin

 517-28-2
Sodium rhodizonate 523-21-7
Nitroso-R salt 525-05-3
Diphenylcarbazone 538-62-5
Aluminon 569-58-4
Sodium methyl red 845-10-3

Eriochrome Blue SE

 1058-92-0

Fast Sulphon Black

1064-48-8
Bismuthiol I 1072-71-5
4-(2-Pyridylazo)resorcinol 1141-59-9
Glyoxal-bis(2-hydroxyanil) 1149-16-2
Carminic acid 1260-17-9
Oftasceine 1461-15-0
Chromeazurol S 1667-99-8
Arsenazo III 1668-00-4

Eriochrome Black T

 1787-61-7

Methylthymol Blue

 1945-77-3

2-Cresolphthalexon

 2411-89-4

Calcon

2538-85-4

Murexide

3051-09-0

Calmagite

 3147-14-6
Eriochrome Cyanine R 3564-18-9

Eriochrome Blue Black B

3564-14-5
N-Phenyl-alpha-(4-nitrophenyl)nitrone 3585-90-8

Xylenol Orange

 3618-43-7

Eriochrome Red B

 3618-63-1
Xylenol Orange tetrasodium 3618-43-7
Thorin 3688-92-4
Calconcarboxylic acid 3737-95-9
Diamine green B 4335-09-5
4-(4-Nitrophenylazo)-1-naphthol 5290-62-0
5-Sulfosalicylic acid dihydrate 5965-83-3
Alloxan tetrahydrate 6010-91-9
3,3'-Dimethylnaphthidine 13138-48-2
Potassium hexacyanoferrate(III) 13746-66-2
Xylidyl blue I 14936-97-1
Trimethylphenylammonium bromide 16056-11-4
Bromopyrogallol Red 16574-43-9

Naphthol Green B

 19381-50-1
Pyrogallol Red 32638-88-3
Zincon sodium 62625-22-3
Thymolphthalexon 62698-55-9

Hydroxynaphthol Blue

 63451-35-4
Glycine Cresol Red sodium salt 77031-64-2
3-(3-Hydroxy-4-nitroso-N-propylanilino)propanesulfonic acid 80459-15-0
Calcein disodium 108750-13-6
Morin hydrate 654055-01-3

 

SALES SPECIFICATION

APPEARANCE

 red purple powder

ASSAY

97.0% max

WAVE LENGTH

523 - 525 nm

 

PACKING

 

 

PRICE