Home Categories Chemical Reagents Sulfanilic acid azochromotrop
A7356112

Sulfanilic acid azochromotrop , AR , 23647-14-5

Synonym(s):
1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6- disulfonic acid trisodium salt;1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6-disulfonic acid trisodium salt;2-(4-Sulfophenylazo)-1,8-dihydroxy-3,6-naphthalene disulfonic acid trisodium salt;2-(4-Sulfophenylazo)chromotropic acid trisodium salt;SPADNS

CAS NO.:23647-14-5

Empirical Formula: C16H13N2NaO11S3

Molecular Weight: 528.45

MDL number: MFCD00003952

EINECS: 245-803-9

Pack Size Price Stock Quantity
5G RMB100.80 In Stock
25G RMB267.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: >300°C
storage temp.  Store at +15°C to +25°C.
solubility  220g/l
form  Crystalline Powder
color  Dark red-brown
PH 6.0 (10g/l, H2O, 22℃)
Water Solubility  Soluble in water (10 mg/ml), and ethanol (1 mg/ml). very slightly soluble or insoluble in alcohol and organic solvents.
EPA Substance Registry System 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-sulfophenyl)azo]-, trisodium salt (23647-14-5)

Description and Uses

Sulfanilic acid azochromotrop is used as an indicator for complexometric determinations of zirconium and thorium. It is used as a reagent for drinking and wastewater analysis using Hach Method 8029, Fluoride, SPADNS Method.

Safety

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P280a-P304+P340-P305+P351+P338-P405-P501a-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36
WGK Germany  3
TSCA  Yes
HS Code  2927 00 00

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