Benzenesulfonamide, 5-amino-2-methyl-

Guidance on Safe Use

First-aid measures

Ingestion:Never attempt to induce vomiting. Do not attempt to give any solid or liquid by mouth if the

exposed subject is unconscious or semi-conscious. Wash out the mouth with water. If the exposed

subject is fully conscious, give plenty of water to drink. Obtain medical attention.

Inhalation: Using appropriate personal protective equipment, move exposed subject to fresh air. If

breathing is difficult or ceases, ensure and maintain ventilation. Give oxygen as appropriate. The exp

osed subject should be kept warm and at rest. Obtain medical attention in cases of known or possibl

e over exposure, or with symptoms including chest pain, difficulty breathing, loss of consciousness or

other adverse effects, which may be delayed.

Skin contact: Using appropriate personal protective equipment, remove contaminated clothing an

d flush exposed area with large amounts of water. Obtain medical attention if skin reaction occurs,

which may be immediate or delayed.

Eye Contact: Wash immediately with clean and gently flowing water. Continue for at least 15 minutes.

Obtain medical attention

Fire-fighting measures

Fire and Explosion Hazards This material is non-combustible. Dust clouds are potentially sensitive to

ignition from incendive electrostatic discharges. Dust clouds are of very low sensitivity to ignition from

hot surfaces. No ignition or exotherm of a powder layer observed up to 400 °C.

Ignition of a dust cloud produces a weak dust explosion.

High pressure between 8 and 10 bar is produced during a dust explosion

Suitable extinguishing media  No special requirements needed. Water is recommended for fires invo

lving packaging.

Special protective equipment and precautions for firefighters

Since toxic, corrosive or flammable vapours might be evolved from fires involving this material, self

contained breathing apparatus and full protective equipment are recommended for firefighters.

Move containers from the fire area if possible without increased personal risk.

If possible, contain and collect firefighting water for later disposal.

Specific hazards arising form this material

Toxic, corrosive or flammable thermal decomposition products, which might include sulphur

compounds, are expected when the material is exposed to fire.

Accidental release measures

Personal Precautions  Fence or cordon the affected area and do not allow individuals to touch or walk

through the spilled material unless wearing appropriate protective clothing. Avoid dust generation.

Environmental Precuations Prevent entry into waterways, sewers, surface drainage systems and po

orly ventilated areas. If spill is outdoors, cover with plastic sheet to minimise spreading or contact with

rain.

Clean -up methods  Collect and place it in a suitable, properly labelled container for recovery or di

sposal. After all solid or absorbent material has been collected, the area should be vacuumed with

HEPA filter-equipped apparatus.

Decontamination procedures No specific decontamination or detoxification procedures have been

identified for this material.

Consider use of water, detergent solutions, or other soluble solvents

Handling and storage

General requirements  Avoid dispersion as a dust cloud.

Depending upon the scale of operation, use of appropriate exhaust ventilation is recommended to pr

ovide routine control of fire and explosion hazards during handling of this material.

Ignition Controls Bond and earth (ground) all plant and equipment to ensure that no isolated

conductors are present. Isolated conductors can accumulate sufficient electrostatic charge to produce

dischargesof many hundreds of milli-Joules.

Consider earthing (grounding) personnel dealing with dusty operations. An isolated (insulated) human

body can readily produce electrostatic discharges in excess of 50 mJ, but have been recorded up to

100 mJ.

The maximum surface temperature of enclosures potentially exposed to this material should be the

lower of the values obtained by taking 2/3 of the minimum ignition temperature for a dust cloud or 75

K less than the minimum ignition temperature of the dust layer, with a maximum temperature of 325

°C

Protective systems Assess operations based upon available dust explosion information to determine

the suitability of preventive or protective systems as precautionary measures against possible dust

explosions. If prevention is not possible, consider protection by use of containment, venting or supp

ression of dust handling equipment. Where explosion venting is considered the most appropriate meth

od of protection, vent areas should preferably be calculated based on the Kst rather than the St value.

If nitrogen purging is considered as the protective system, it must operate with an oxygen level below

the limiting oxygen concentration. The system should include an oxygen monitoring and shut-down

facility in the event of excessive oxygen being detected.

At both ambient and low humidity, this material is of low conductivity. Generation of electrostatic

charge is considered likely to occur even when handled in an earthed (grounded) environment.

At ambient humidity, this material has a very long charge relaxation time. Accumulation of electrostati

c charge is considered very likely to occur even when handled in an earthed

(grounded) environment. Under these conditions, it is considered that this material might present a

very high risk of producing an electrostatic discharge.

At low humidity, this material has an extremely long charge relaxation time. Accumulation of electros

tatic charge will occur even when handled in an earthed (grounded) environment. Under these conditi

ons, it is considered that this material might present a very high risk of producing an electrostatic

discharge.

Conditions for safe storgae

Keep in tightly closed containers or packages away from moisture and away from sources of ignition.

Avoid prolonged storage at elevated temperatures (greater than room temperature, approximately 20

degrees C

Transport information

Shipping

SpecialProvisions

Shipping

Remarks

Marine transport (UN RTDG/IMDG)

Shipping

Remarks

Shipping

Remarks

SpecialProvisions

Exposure controls / personal protection

The hygiene guide for this material is >100 to 1000 mcg/m3. An Exposure Control Approach (ECA) is

established for operations involving this material based upon the OEL/Occupational Hazard Category

and the outcome of a site- or operation-specific risk assessment. Refer to the Exposure Control Matri

x for more information about how ECA's are assigned and how to interpret them.

Containment  Open handling should be limited to small quantities. Consider use of enclosures.

Ventilation  Local exhaust ventilation (LEV) should be applied at the source to capture contaminants

from open or semi-enclosed operations

Administrative  Entry to the working area should be controlled

PERSONAL PROTECTIVE EQUIPMENT

Eye Protection Wear approved safety glasses with side shields or cover goggles if eye contact is

possible.

Gloves The selection of gloves for a specific activity must be based on the material's properties and

on possible permeation and degradation that may occur under the circumstances of use. Glove s

election must take into account any solvents and other hazards present. Potential allergic reactions

can occur with certain glove materials (e.g. Latex) and therefore these should be avoided.

Respirators If respiratory protective equipment (RPE) is used, the type of RPE will depend upon

air concentrations present, required protection factor as well as hazards, physical properties and

warning properties of substances present. Follow local regulations for respirator use in the workplace.

Other Equipment or Procedures

Wear appropriate clothing to avoid skin contact. An eye wash station should be available.

Stability and reactivity

Conditions to Avoid: Avoid direct sunlight, conditions that might generate heat and dispersion as a dust

cloud.

Disposal considerations

Collect for recycling or recovery if possible. The recommended method of disposal is incineration.

Wherever possible, disposal should be in an on-site licenced chemical incinerator, if allowed by the

incinerator licence or permit. If no on-site incinerator is available, dispose of material in a

licenced commercial chemical incinerator.