Safe storage

SentID Model text, parameters and parameter values (with Indications and Explanations) PB# / notes 640000 Safe storage

Explanation: The storage instructions described in the ICSC are recommended primarily from the health and safety perspective. No consideration has been given, for example, to the (non-hazardous) deterioration of a chemical from the technical standpoint.

Indication: Especially for substances that react with humid air and to prevent the formation of peroxides. Not to be used to control (normal) evaporation.

640001 See Chemical Dangers.

Explanation: This phrase is selected only in some cases where there is a long list of chemicals reacting with the substance. It is always preferable to repeat the class or even name of substances susceptible to react violently with the chemical.

Indication: Use the phrase after selecting P1 incompatible materials in 640033. In the case, some chemicals are already cited in the phrase 640033, use 'Separated from... and [other]

incompatible materials. See chemical dangers.' 640002 See Notes.

640003 Cool. 22301000

Explanation: This is applicable to cylinders, highly volatile liquids, and to substances which may decompose, polymerize, or form peroxides upon warming. In general a storage temperature below 25°C will be sufficient.

Indication: Applies if 'very volatile' is used (see indication LIQUID in Physical state; appearance), or if an undesired reaction occurs, or dissolved gas comes free on warming above 30°C.

640004 Cooled.

Indication: Applies if a storage temperature < 10°C is necessary.

640005 Do NOT store or transport in containers made from [P1|, | or ].

Explanation: Especially in countries with low technical standards and legislation, it happens often that compounds are divided from the original packaging and stored in normal daily used packaging like tins, cans, bottles etc.

Indication: Select the phrase in case of reaction with material that is used for storing or transport (temporary storage), like Al, Zn, plastics, glass.

Parameters: 11 parameters: P1: alloys high in copper; … zinc 640006 Do not allow to solidify.

640012 Dry.

Explanation: This applies to hygroscopic and deliquescent substances as well as to substances which may react with water and/or moist air.

Indication: Applies to hygroscopic and deliquescent substances, and chemicals that may react with water or moist air.

640013 Fireproof if in building.

Explanation: 'Fire-proof' applies to gas-cylinders stored within a building, even if the gas is not combustible. See general expl.of the field and 640014.

Indication: Applies if non-combustible gas in cylinders. Also see ind. 640014. H280 640014 Fireproof.

Explanation: This condition is specified for flammable substances and for flammable gases in cylinders. Also for solids which can develop combustible gases if in contact with water or water vapour (H260 H261) and for solids which for any reason should be stored under fireproof conditions. 'Fire-proof' implies: - the construction (degree of fire-resistance) and location (with respect to other buildings) of the storage accommodation in relation to the quantity and flammability of the stored substances; - the possibility of collecting part of the stored liquid to limit spreading; - compartments within a building to separate reactive substances from one another; - special requirements for electrical, heating, and sewage installations; - adequate ventilation to open air; - provision of sufficient fire extinguishing agents and facilities; - regulations, e.g., for filling,

discharging, and handling (decanting preferably in a separate room); - no-smoking and other warning signs; and- suitable packaging of stored substances. These items are often detailed in official national regulations; otherwise refer to specialized handbooks on fire prevention.

Indication: Applies to: - gases in cylinders, only if combustible (H220 H221); - substances with flash points < 61°C and all those for which 420009, 420018, 420011, 420022, or 450038 has been used (H222 H223 H224 H225 H226 H228); or - substances which may decompose readily on heating, producing very toxic gases or vapours (rat LC50 (4 hr) <= 0.5 mg/l).

N.B.: The condition 'fire-proof' is intended to reduce the fire hazards caused by the storage of flammable substances to a practicable minimum. In other words, prevent the supply of flammable material to a fire that has started and prevent contact of

flammables with sources of ignition. 'Fire-proof' is not generally intended to restrict the hazard of evaporation of a liquid with a toxic vapour; it would lead to storage of nearly all liquids under fireproof conditions. An exception could be made for substances which should be kept out of the heat of a fire because they readily decompose on heating, producing very toxic gases or vapours. The use of 'fire-proof' for this purpose should not be frequent. Also see 640003 ('cool').

640016 Inspect container frequently to identify bulging and leaking.

640017 Install continous monitoring system with alarm.

640018 Isolated from work area.

640019 Keep in a separate building protected from shock.

640021 Keep in a well-ventilated room.

Indication: For substances for which 640048 does not apply, but nevertheless on long storage need ventilation because they very slowly release harmful vapours, e.g., high boiling pesticides.

640022 Keep in the dark.

Indication: Apply if the chemical reacts or polymerises, or forms peroxides under the influence of light. Do not use when exposure to light degrades the quality of the substance, e.g., by discoloration, without creating hazardous conditions.

640023 Keep under [P1|, | or ].

Parameters: 7 parameters: P1: inert gas; mineral oil; nitrogen atmosphere; oil; oxygen-free liquid;

petroleum oil; water 640028 Store in [P1|, | or ].

Parameters: 10 parameters: P1: a separate building; … vented containers 640029 Ozone is frequently stored refrigerated in halons.

640030 Provision to contain effluent from fire extinguishing.

Explanation: On extinguishing a fire with water, the effluent will be polluted by the burning

substance and its combustion products. In the case of very ecotoxic substances, storage

provisions should be taken to prevent the effluentwater from reaching sewers and/or surrounding surface waters.

Indication: Applies to substances responding to the criteria of the phrases 850016, 850015 (env

"very toxic" or "toxic"), or 850010, or 310005.

640033 Separated from [P1|, | and ].

Explanation: This is recommended if the substance can react violently with the substances mentioned. IMPORTANT DATA, contains information about reactivity.

Indication: Complete with the name(s) of the chemical(s) with which the substance may react vigorously. Only to be used if the named chemicals are reasonably common in industrial or laboratory practice. These should not be used for substances in gas-cylinders!

Parameters: 116 parameters: P1: : see Chemical Dangers; … zinc alloys

P1 incompatible materials

Links: 640001

640035 Solutions of diazomethane should not be stored.

640036 Store between [N1]°C and [N2]°C.

640037 Store at maximum 20 °C, never exceed 30 °C.

640038 Store in an area having corrosion resistant concrete floor.

640039 Store in an area without drain or sewer access.

Explanation: Some substances, when released in the sewer, could cause a serious explosion hazard, and other substances could initiate an environmental problem. To avoid this, it would be preferable to store such substances in rooms where there is no open drain connected to a sewer.

Indication: Use the phrase when 630034 or 630036 is selected.

640042 Store only if stabilized.

Explanation: This applies to substances which tend to polymerize or which may either react violently or form hazardous compounds during storage (with, e.g., atmospheric oxygen, peroxide formation, etc.). The selection of a suitable inhibitor or stabilizer must always be left to an expert, whose assistance is also needed when there is uncertainty as to whether the inhibitor has been added. The expert should also check if the stabilizer alters the toxicological properties of the substance and adjust the preventive measures when necessary.

Indication: Apply if the substance polymerises or may react violently or form hazardous

compounds during storage (with, e.g., atmospheric oxygen, peroxide formation, etc.).

Links: 870067

640043 Store only in original packaging.

640044 Store outside or in a separate well-ventilated building.

640046 The substance cannot be stored or shipped.

640048 Ventilation along the floor.

Explanation: This applies to substances which may form dense vapour/air mixtures that stay near the floor.

Indication: Applies if boiling point is < 350°C and flash point > 60°C or if non-combustible and the relative density of vapour/air mixture >= 1.0 at 20°C.

640049 Ventilation along the floor and ceiling.

Indication: Applies if a gas with molecular mass < 29 (check 500001/500002-8).

640050 Well closed.

Indication: Use for toxic or very toxic substances, for highly or extremely flammable substances or for substances with a high vapour pressure. Use for hygroscopic and deliquescent substances, for substances which may react with water and/or moist air, for substances with peroxide formation, and for substances with strong smell (e.g. mercaptans). It is also recommended to use this phrase in case of radioactive substances because of the problem of decontamination when the substance is spilled. Also use for liquids in bottles and drums.

Links: (640003) 640052 Substance should be kept wet.

640053 Store only in original container.

Explanation: The original container will have been designed-selected to take in account the compatibilities and reactivity issues related to the substance.

Indication: Use for chemicals that are classified as T+, C and N. Consider for very toxic and corrosive substances or substances which are harmful to the environment (when H300, H310, H330, H314, H318, H290, H400, H401, H402, H410, H411 or H412 is applied).

640055 Storage conditions may vary according to the type of inhibitor used.

640056 Refer to the manufacturer's instructions for proper storage conditions.

640057 Store only if damped.