BEFORE 2008- EC 793/93Existing chemicals - substances on the market 010171-180981 – European Inventory of Excisting Commercial Chemical Substances EINECS New chemicals – compounds on the
Trang 2CHALLENGES – SAFETY OF CHEMICALS
Trang 5BEFORE 2008- EC 793/93
Existing chemicals - substances on the market
010171-180981 – European Inventory of Excisting Commercial
Chemical Substances (EINECS)
New chemicals – compounds on the market after 180981
Responsibilities – Public authorities for existing chemicals –
141 high volume chemicals (MS RAR, ECB, SCHER, EC)New chemicals to be tested at volumes as low as 10 kg/yr
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Trang 7i There is a need for further information
and/or testing
ii There is at present no need for further
information and/or testing and for risk reduction measures beyond those which are being
Trang 8Regulation (EC) No 178/2002
• Article 7 - Precautionary principle
– 1 In specific circumstances where, following
an assessment of available information, the
possibility of harmful effects on health is
identified but scientific uncertainty persists,
provisional risk management measures
necessary to ensure the high level of health protection chosen in the Community may be adopted, pending further scientific information for a more comprehensive risk assessment
Trang 9DGSANCO
HEALTH AND CONSUMER PROTECTION
SCIENTIFIC COMMITTEES:
CONSUMER PRODUCTS (SCCP)
HUMAN AND ENVIRONMENTAL RISK (SCHER)
EMERGING AND NEWLY IDENTIFIED HEALTH
RISKS (SCENIR)
EFSA (Parma, IT)
EMEA (London, UK) 9
Trang 10OBJECTIVES of REACH
Protection of human health and the environment
Maintenance and enhancement of the
competitiveness of the EU chemical industry
Prevention of fragmentation of the internal market
Increased transparency
Integration with international efforts
Promotion of non-animal testing
Trang 11HOW WILL REACH WORK ?
All substances are covered by the regulation
Registration – manufacturers/importers obtain relevant informations
Reduce testing on vertebrate animals – data sharing
Better information on hazards and risks
Evaluation - ECHA (Helsinki)
Authorisation – risk adequately controlled,
socio-economic benefits outweigh risk, no suitable alternative substitute
Registration
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Trang 12Products or commodities, where the form is more
important than the chemical composition
Excempted compounds: Annex 4
Trang 13ANNEX 4 and 5 EXEMPTIONs
Radioactive substances
Substances in transit
Non-isolated intermediates
Polymers
Substances which occur in nature
and not chemically modified –
minerals, ores, crude oil, vegetable
oil
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Trang 14Technical dossier – 1 tonne or more
Chemical safety report – 10 tonne or more
Responsibility of manufacturer og importer to collect
information on the substance, assessment of the risk and
to ensure that the risk is properly managed.
Trang 15TECHNICAL DOSSIER
Properties – physiochemical & toxicological
(requirement depends on tonnage)
Substances that are dangerous to health
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Trang 16CHEMICAL SAFETY REPORT
Classification of substanse
Describes exposure scenarios, manufacturing,
use and life-cycle
risk management procedures, including safety data sheets
CSR should be developed for all uses, by
importer/producer as well as downstream users
Trang 17CLASSIFICATION – safe levels
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Trang 18GLOBAL HARMONIZED SYSTEM
Acute toxicity – oral (LD50)
Category 2 (same label) Substances which should be
regarded as they are carcinogenic to man
Category 3 (Xn R40) Substances which cause
Trang 19EXPOSURE SCENARIOS
1 Identify uses of chemical
Manufacturing, industrial use, service life, waste
2 Identify routes of potential exposure
for each use
3 Develop exposure scenario for each
Trang 20EXPOSURE SCENARIOS-WORKERS
• Work process – descriptor
• Time of activity
• % of substance used
• Form of substance (gas, liquid, solid)
• Vapour pressure, dustiness
Trang 21Worker exposure – methanol (Tier 1)
Generic processing – closed system (PROC 2)
Type of setting – industrial
Form of substance – liquid
Duration of exposure > 4 hrs (default)
Location indoor without ventilation
Inhalation exposure 66.8 mg/m3
Dermal exposure 1.4 mg/kg/day
Other worker functions – 267-333 mg/m3 og 6.9
mg/kg/day
8 hrs TWA 260 mg/m3 and IRIS RfD= 0.5 mg/kg/day21
Trang 22EXPOSURE SCENARIO - CONSUMER
• Select sentenial product (PC/AC)
• Select sub product category
Trang 23Frequency event/day
Fraction relased
Room volume
Conversion factor
Exposure air conc mg/m3
Body weight
Expos ure dose
Trang 24ISOLATED INTERMEDIATES
”Light” registration when manufactured under strictly controlled conditions not likely to be present in final
product
If product leaves the production site – transported
between sites under controlled conditions
Hazard classificationInformation on risk managements
If more than 1000 tonnes is transported full dossier is
Trang 25REDUCE ANIMAL TESTING
Data sharing
3R principles
reducerefinereplace
ECVAM – European Center for Validation of
Alternative Methods
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Trang 26SUBSTANCES 1 to 10 T per year
Toxicological data on skin and eye irritation in
vitro, skin sensitation and bacterial mutagenicity
Skin/eye test donot need to be conducted if
chemical is corrosive
If positive bacterial mutagenicity test then
additional mutagenicity tests
Trang 27SUBSTANCES 10-100 T YEAR
Same as for 1-10 T + in vivo skin and eye test
Genotoxicity in vitro mammalian cells
Repeated dose toxicity 28 days – exemption if
compound is immediately degraded and relevant human exposure can be excluded
Reproductive toxicity – exemption if compound is genotoxic and appropriate risk management can
be implemented and if human exposure can be
Trang 28SUBSTANCES >100 Tons per Year
90 days chronic toxicity study
Excemption: If 28-days study show severe toxicity R48
NOAEL is calculated from NOAEL-28 with UF
No evidence of absorption and
no toxicity in 28-day study
Trang 29SUBSTANCE IN ARTICLES
REACH requies all substances that are intended to be released from articles during norml and foreseeable
conditions of use to be used according to normal and
reasonable foreseable conditions to be registered
Substances of very high concern present in articles
above the concentration limit of 0.1% weight by weight (
< 1 tonne per year)
exemption: where exposure to human and the
Trang 30Dossier evaluation:
Compliance testChecking of testing proposals
Substance evaluation: in collaboration with MS
development of action plan – MS to evaluate priority substances
Trang 31Scientific evidence – case-by-case basis
ECHA will publish list annually based upon scientific
data (committee) – uses exempted
Granted if adequately controlled, socioeconomic benefits outweigh risk, no sutiable alternative
If safe level cannot be defined, substance cannot be authorized
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Trang 32Key actor: European Chemical Agency
Registration of chemical compounds:
Deadline 3 yrs for >1000 t, and for compounds with carcinogenic, mutagenic
properties and those toxic for reproduction (CMR compounds)
Deadline 6 years for 100-1000 t Deadline 11 years for 10-100 t and 1-10 t
Trang 33REACH - DEADLINES
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Trang 34Substitute a compound with an less toxic alternatives
No special criteria – substances requiring an authorization
Based upon NOEL/ MOS
Alternatives may be associated with risk
A substance banned in Europe can re-enter the
European Market in finish articles
Trang 36MOE APPROACH
• Selection of the appropriate reference point from the dose response curve for
comparison with human intake
• Estimation of human exposure
• Calculation of an MOE
Trang 37MARGIN OF EXPOSURE (MOE)
Definition:
The ratio between the defined point on the
dose-response curve for the adverse effect and the human intake
No implicit assumption about a ”safe” intake
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Trang 38INTERPRETATION OF MARGIN OF
EXPOSURE
• Inter-species and intra-species differences
• 100 would be sufficient
• Nature of the carcinogenic process
• Type of reference point
Trang 39BENEFITS of REACH
Positive occupational impact
Positive public health impact
(employment opportunities for toxicologist)
Economic benefits:
World bank estimate:
Chemicals account for 1% of all diseasesAssuming a 10% reduction as a consequence of REACH - 4500 death due to cancer
Value of human life 1 M€
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