Melting point :>250°C
storage temp. :2-8°C
solubility :Solubility Soluble in water, acetic acid ethanol
Colour Index :14890
form :Powder
color :Brown to yellow to orange
PH Range :Bright yellow (6.0) to bright blue (7.2)
Water Solubility :Dissolve in water at 1mg/ml
λmax :586nm
Major Application :Sensors, display devices, sol-gel matrix, electrorheological materials, diesel feuls/kerosines, detergent, fabric softner, food storage, method for identifying fresh & stale rice, in dialysis solution, screening of NAD-binding, monitoring secreted body fluids, lymph node, diagnostic pads, vaginal infection test method, assay for esterolyticenzyme activity, detecting pathogenic bacteria, diagnosis of bacterial vaginosis, detecting dysfunctional pregnancy, drugs screening
CAS DataBase Reference :5423-07-4(CAS DataBase Reference)
EPA Substance Registry System :2,7-Naphthalenedisulfonic acid, 3-[(2,4-dinitrophenyl)azo]-4-hydroxy-, disodium salt (5423-07-4)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H340 May cause genetic defects Germ cell mutagenicity Category 1A, 1B Danger H413 May cause long lasting harmful effects to aquatic life Hazardous to the aquatic environment, long-term hazard Category 4
Precautionary statements:	P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302+P352 IF ON SKIN: wash with plenty of soap and water. P308+P313 IF exposed or concerned: Get medical advice/attention. P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention. P405 Store locked up. P501 Dispose of contents/container to..…