Diarsenic trioxide

CAS Number
Diarsenic trioxide
SIN Groups
Arsenic compounds
Reason for inclusion on the SIN List
Classified CMR according to Annex VI of Regulation 1272/2008
Date for inclusion on the SIN List
2008 September
REACH status, appears on
Source: ECHA
Candidate list
Authorisation list (annex XIV)
Restriction list (annex XVII)
Registration information
Source: ECHA
Full registration
Hazard class and category code(s)
Source: ECHA
Carc. 1A
Acute Tox. 2 *
Skin Corr. 1B
Aquatic Acute 1
Aquatic Chronic 1

Chemical information

Diarsentrioxid; Arsenic trioxid; Trióxido de diarsénico; Trioxyde de diarsenic
EC number
Hazard statement code(s)
Source: ECHA
Registered production volume
Source: ECHA
100 - 1000 tonnes per annum
Possible uses
Source: HSDB; Chemical land
Wood, glass, alloys, pesticides, pharmaceuticals, leather hides, textile, ceramics, enamel, dyes, pigments
Technical function of substances
Source: HSDB; Chemical land
wood preservative, preserving hides; textile mordant, Pigment, decolorizing agent, pesticide
Registered use(s) - Sector End Use (SU)
Source: ECHA
SU 13: Manufacture of other non-metallic mineral products, e.g. plasters, cement
SU 14: Manufacture of basic metals, including alloys
SU 8: Manufacture of  bulk, large scale chemicals (including petroleum products)
Registered use(s) - Chemical Product category (PC)
Source: ECHA
PC 19: Intermediate
PC 33: Semiconductors
PC 7: Base metals and alloys
Registered use(s) - Environmental Release Category (ERC)
Source: ECHA
ERC  7: Industrial use of substances in closed systems
ERC 1: Manufacture of substances
ERC 6a: Industrial use resulting in manufacture of another substance (use of intermediates)
Registered use(s) - Process Category (PROC)
Source: ECHA
PROC 1: Use in closed process, no likelihood of exposure
PROC 22: Potentially closed processing operations with minerals/metals at elevated temperature. Industrial setting
PROC 26: Handling of solid inorganic substances at ambient temperature
PROC 2: Use in closed, continuous  process with occasional controlled exposure
PROC 3: Use in closed batch process (synthesis or formulation)
PROC 4: Use in batch and other process (synthesis) where opportunity for exposure arises
PROC 8b: Transfer of substance or preparation (charging/discharging) from/to vessels/large containers at dedicated facilities


Company Group
Company Name

ALTICHEM, 4 Rue Jacques Vaucanson,95310, SAINT-OUEN-L'AUMÔNE VAL D'OISE, France


Aurubis AG, Hovestrasse 50,20537, Hamburg Hamburg, Germany


Boliden Harjavalta Oy, Teollisuuskatu 1,29200, Harjavalta, Finland

Boliden Kokkola Oy, Outokummuntie 8,67101, Kokkola, Finland


Nordenhamer Zinkhütte GmbH, Johannastr. 1,26954, Nordenham, Germany


KENNECOTT UTAH COPPER, LLC, 4700 Daybreak Parkway, South Jordan, Salt Lake, 84095, UT, , USA


KOPPERS PEFORMANCE CHEMICALS, 3450 Fite Rd, Millington, Shelby, 38053, TN, , USA

Lonza Group

ARCH WOOD PROTECTION INC, 1579 Koppers Road, Conley, Clayton, 30288-1215, GA, , USA

Rockwood Holdings

CHEMICAL SPECIALTIES INCORPORATED, 5910 Pharr Mill Road, Harrisburg, Cabarrus, 28075-8625, NC, , USA

Service Provider

B-Lands Consulting (811244-6), World Trade Center, 5 Place Robert Schuman - BP1510,38024, Grenoble France, France


Umicore NV/SA, Rue du Marais 31,1000, Brussels, Belgium

UMICORE SPECIALTY CHEMICALS - ARAB, 1951 Guntersville Road, Arab, Marshall, 35016-3993, AL, , USA

Source: ECHA