CHROMOTROPIC ACID 2SOD 2HYD

Name	4,5-Dihydroxynaphthalene-2,7-disulfonic acid, disodium salt dihydrate
Synonyms	CHROMOTROPIC ACID 2SOD 2HYD CHROMOTROPIC ACID DISODIUM SALT DIHYDRAT E, ACS 4,5-DIHYDROXYNAPHTHALENE-2,7-*DISULFONIC ACID DISOD 4,5-Dihydroxy-2,7-naphthalene disulfonic acid disodium salt disodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate 4,5-Dihydroxynaphthalene-2,7-disulfonic aciddisodium salt dihydrate 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt dihydrate 4,5-Dihydroxynaphthalene-2,7-disulfonic acid, disodium salt dihydrate 4,5-DIHYDROXYNAPHTHALENE-2,7-DISULFONIC ACID, DISODIUM SALT DIHYDRATE, TEC 4,5-DIHYDROXYNAPHTHALENE-2,7-DISULFONIC ACID, DISODIUM SALT DIHYDRATE, A.C. CHROMOTROPIC ACID, DISODIUM SALT, REAGENT (ACS)CHROMOTROPIC ACID, DISODIUM SALT, REAGENT (ACS)CHROMOTROPIC ACID, DISODIUM SALT, REAGENT (ACS)
CAS	5808-22-0
EINECS	611-619-6
InChI	InChI=1/C10H8O8S2.2Na.2H2O/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8;;;;/h1-4,11-12H,(H,13,14,15)(H,16,17,18);;;21H2/q;2+1;;/p-2

Molecular Formula	C10H10Na2O10S2
Molar Mass	400.29
Melting Point	>300°C(lit.)
Water Solubility	Soluble in water.
Solubility	170g/l
Appearance	Powder
Color	off-white
Merck	14,2241
BRN	3647189
PH	3.6 (10g/l, H2O, 20℃)
Storage Condition	Store below +30°C.
Stability	Stable. Incompatible with strong oxidizers, strong acids, acid chlorides, acid anhydrides. Light sensitive.
Use	Used as analytical reagents, but also for organic synthesis

Hazard Symbols	Xi - Irritant
Risk Codes	36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection
WGK Germany	3
TSCA	Yes
HS Code	29089990

color index	57030
overview	disodium salt of chromogenic acid is white to gray, beige or light brown powder. It is an organic acid sodium salt, which can be used for colorimetric determination of mercury and organic synthesis.
use	used as experimental reagent and dye intermediate used as experimental reagent and dye intermediate as analytical reagent, also used in organic synthesis used in Ag, ClO3- , Cr, Hg, NO2-, NO32-, Ti determination, organic synthesis.

Last Update：2024-04-09 15:16:46

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