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calcium,4-[[4-(diethylamino)phenyl]-(4-diethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)methyl]-6-hydroxybenzene-1,3-disulfonate

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Origem: China

Cas No: 3536-49-0

Especificação: 99%Min

Quantidade de ordem min: 1 /kg

Capacidade de fornecimento: 100 mt/month

Tempo de espera: 7 dias para OEM, 3 dias para produtos prontos

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CAS No.: 3536-49-0 Formula: C54H62CaN4O14S4 Molecular Weight: 1159.43000

Description

Patent Blue V, also called Food Blue 5, Sulphan Blue, Acid Blue 3, L-Blau 3, C-Blau 20, Patentblau V, Sky Blue, or C.I. 42051 and is a dark bluish synthetic triphenylmethane dye used as a food coloring. As a food additive, it has E number E131. It is a sodium or calcium salt of [4-(α-(4-diethylaminophenyl)-5-hydroxy- 2,4-disulfophenylmethylidene)-2,5-cyclohexadien-1-ylidene] diethylammonium hydroxide inner salt.[clarification needed]; It is not widely used, but in Europe it can be found in Scotch eggs, certain jelly sweets, blue Curaçao, certain jello varieties (though not in actual Jell-O brand products), among others. An important advantage is the very deep color it produces even at low concentration, a disadvantage is that it fades fairly quickly when exposed to light.
Patent Blue V is banned as a food dye in Australia and US, because health officials in these countries suspect that it may cause allergic reactions, with symptoms ranging from itching and nettle rash to nausea, hypotension, and in rare cases anaphylactic shock; it is therefore not recommended for children in those countries.
In medicine, Patent Blue V is used in lymphangiography and sentinel node biopsy as a dye to color lymph vessels. [clarification needed] It is also used in dental disclosing tablets as a stain to show dental plaque on teeth.
The color of the dye is pH-dependent. In aqueous solution, its color will vary from a deep blue in alkaline or weakly acidic medium to a yellow–orange in stronger acidic conditions. It is useful as a pH indicator for the range 0.8–3.0. The structure is also redox-sensitive, changing from a reduced yellow form to an oxidized red form in solution. The reduction potential of around 0.77volts is similar to that of other triphenylmethane dyes. It is usable as a reversible redox indicator in some analytical methods.
Because of its pH-dependent color, Patent Blue V was included in chemistry sets from Salter Science in the 1970s and 80s under the name Sky Blue.

Basic Info

Chemical Name	calcium,4-[[4-(diethylamino)phenyl]-(4-diethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)methyl]-6-hydroxybenzene-1,3-disulfonate
Synonyms	Merantine Blue V; Acid Blue 3 calcium salt,Acid Blue V calcium salt,Food Blue 5; Patent Blue V and L; C.I. Acid Blue 3; Patent Blue V calcium salt; Blue ZN 3; patent blue V; Solar Pure Blue VX; Carmine Blue V; Acid blue 3; Acidal Carmine V; Schultz No. 826;
CAS No.	3536-49-0
Molecular Formula	C54H62CaN4O14S4
Molecular Weight	1159.43000
PSA	315.28000
LogP	11.25880

Properties

Appearance & Physical State	dark blue powder
Melting Point	>300ºC

Safety Info

Safety Statements	S22; S24/25
Risk Statements	R40

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